Arduino & SCM Supplies

1. Discharge current: 50A2. Charging current: 15A3. Main circuit on-conduction resistance: 20 milliohms4. Discharge overcurrent protection: 100A5. Meets the battery management requirements of most electric bicycles, electric tricycles, and home energy storage systems6. Uses a common interface design for charging and discharging, simplifying wiring7. Built-in precision integrated circuit (IC) protection scheme, supporting efficient battery balancing to ensure consistent cell voltage8. Equipped with an anodized aluminum alloy heat sink, increasing heat dissipation area, effectively reducing operating temperature, and ensuring the stability and safety of the protection board under high load operation9. Product dimensions: 86.5x55x10mmSpecification: Package Weight One Package Weight 0.10kgs / 0.23lb One Package Size 10cm * 7cm * 2cm / 3.94inch * 2.76inch * 0.79inch Qty per Carton 320 Carton Weight 33.10kgs / 72.97lb Carton Size 42cm * 37cm * 34cm / 16.54inch * 14.57inch * 13.39inch Loading Container 20GP: 504 cartons * 320 pcs = 161280 pcs 40HQ: 1171 cartons * 320 pcs = 374720 pcs

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1. Specifically designed for 16S 48V (standard voltage 51.2V) lithium iron phosphate (LiFePO4) battery packs. Widely used in home photovoltaic energy storage systems, communication base station backup power, low-speed electric four-wheelers, and DIY power battery packs.2. Built-in high-precision balancing chip, supporting automatic balancing, charging balancing, and static balancing modes. It intelligently detects and transfers the voltage difference between individual cells, effectively eliminating the "weakest link" effect in the battery pack and significantly extending the overall lifespan of the cells.3. The main circuit core uses a low-resistance, high-power MOSFET, featuring ultra-low heat generation and high conductivity, supporting a continuous discharge current of 30A and a charging current of 15A, maintaining smooth and efficient operation even under high load.4. Adopts an open dual-layer heat dissipation architecture, combined with a large-area anodized blue aluminum heat sink, ensuring smoother airflow and significantly improved heat conduction efficiency, guaranteeing that components always operate within a safe temperature range.5. The data acquisition cable socket adopts a sturdy snap-on design, effectively preventing shock and detachment. Different string counts correspond to dedicated ribbon cables.6. Standard configuration includes high-quality high-temperature resistant ribbon cables (thickened pure copper core), offering excellent conductivity, safer installation, and greater durability.Specification: Package Weight One Package Weight 0.09kgs / 0.21lb One Package Size 19cm * 11cm * 5cm / 7.48inch * 4.33inch * 1.97inch Qty per Carton 36 Carton Weight 4.40kgs / 9.70lb Carton Size 40cm * 35cm * 32cm / 15.75inch * 13.78inch * 12.6inch Loading Container 20GP: 595 cartons * 36 pcs = 21420 pcs 40HQ: 1381 cartons * 36 pcs = 49716 pcs

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1. The product is an 80 × 40 resolution full-color RGB LED dot matrix module, integrating 3200 LEDs and equipped with dual HUB75 headers, supporting cascade expansion and rapid integration.2. 3200 individual RGB LEDs, full-color display, adjustable brightness3. 80 × 40 pixels, 4mm pitch, allows displaying text, colorful image, or animation4. 320 × 160 (mm) dimensions, moderate size, suitable for DIY desktop display or wall mount display5. Onboard dual HUB75 headers, one for controller data input, one for output, chain support6. Provides open source development resources (examples for ESP32 / Raspberry Pi / Arduino / STM32)Specifications:1. Product dimensions: 320 × 160 mm2. Resolution: 80 × 40 / 3200 dots3. Pixel pitch: 4 mm4. Pixel configuration: 1R1G1B5. Viewing angle: Greater than or equal to 140-degree6. Control method: Synchronous control7. Driving method: 1/20 scan8. Interface type: HUB759. Power supply voltage: 5V / 4A (VH4 connector input)10. Power consumption: Less than or equal to 20WSpecification: Package Weight One Package Weight 0.36kgs / 0.80lb One Package Size 34cm * 18cm * 4cm / 13.39inch * 7.09inch * 1.57inch Qty per Carton 30 Carton Weight 11.90kgs / 26.23lb Carton Size 36cm * 38cm * 47cm / 14.17inch * 14.96inch * 18.5inch Loading Container 20GP: 414 cartons * 30 pcs = 12420 pcs 40HQ: 962 cartons * 30 pcs = 28860 pcs

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1. Powered by the RP2350 microcontroller chip developed by Raspberry Pi2. Features a unique dual-core, dual-architecture design, equipped with dual-core ARM Cortex-M33 processors and dual-core Hazard3 RISC-V processors; operates at clock speeds up to 150MHz and allows flexible switching between the two architectures3. Built-in 520KB SRAM and 16MB on-chip Flash4. Uses a USB Type-C interface for modern convenience—no need to worry about connector orientation5. Onboard 0.85-inch LCD screen with 128 × 128 resolution and 65K colors6. Supports USB 1.1 Host and Device modes7. Supports low-power sleep and dormant modes8. Recognized as a mass storage device via USB for drag-and-drop programming9. Includes 1x I2C, 1x UART, 2x 12-bit ADCs, and 2x controllable PWM channels10. Precise on-chip clock and timers11. Built-in temperature sensor for real-time chip temperature monitoring12. 12 Programmable I/O (PIO) state machines for custom peripheral supportLCD Screen Specifications:1. Operating voltage: 3.3V/5V2. Display size: 15.21 × 15.21 mm3. Resolution: 128 × 128 pixels4. Colors: 65K5. Panel type: IPS6. Pixel pitch: 39.6 × 118.8 μm7. Interface: 4-wire SPI8. Driver IC: ST7735Specification: Package Weight One Package Weight 0.06kgs / 0.13lb One Package Size 8cm * 8cm * 6cm / 3.15inch * 3.15inch * 2.36inch Qty per Carton 144 Carton Weight 9.00kgs / 19.84lb Carton Size 50cm * 38cm * 34cm / 19.69inch * 14.96inch * 13.39inch Loading Container 20GP: 412 cartons * 144 pcs = 59328 pcs 40HQ: 958 cartons * 144 pcs = 137952 pcs

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1. No backlight, keeps displaying last content for a long time even when power down2. Ultra low power consumption, basically power is only required for refreshing3. Comes with online development resources and manual (driver board schematic diagram and examples for Raspberry Pi / Jetson Nano / Arduino / STM32 / ESP32, etc.)Optional for e-Paper driver board:1. Standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi and Jetson Nano series boards2. Adopts Raspberry Pi HAT+ standard to improve interoperability, helping the users to design and develop faster, easy to use with other peripherals and extend more functions for Raspberry Pi3. Adapting SPI interface for connecting with controller boards like Raspberry Pi / Jetson Nano / Arduino / STM32 / ESP32, etc.4. Onboard voltage translator, compatible with 3.3V / 5V MCUsSpecifications:1. Operating voltage: Raw display: 3.3V3.3V；with driver board: 3.3V / 5V2. Display colors: Red, yellow, black, white3. Communication interface: 3-wire SPI, 4-wire SPI4. Grayscale levels: 25. Dimensions: Raw display: 105.33 × 62.37 × 0.91 mm; with driver board: 107.00 × 64.00 mm6. Full refresh time: 20s7. Display area: 92.80 × 55.68 mm8. Refresh power consumption: Less than 90mW9. Dot pitch: 0.116 × 0.116 mm10. Sleep current: Less than 0.01μA (near zero)11. Resolution: 800 × 480 pixels12. Viewing angle: Greater than 170-Specification: Package Weight One Package Weight 0.08kgs / 0.19lb One Package Size 14cm * 10cm * 3cm / 5.51inch * 3.94inch * 1.18inch Qty per Carton 128 Carton Weight 11.30kgs / 24.91lb Carton Size 50cm * 34cm * 34cm / 19.69inch * 13.39inch * 13.39inch Loading Container 20GP: 461 cartons * 128 pcs = 59008 pcs 40HQ: 1071 cartons * 128 pcs = 137088 pcs

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1. The PCIe to M.2 E-Key HAT+ (D) is a powerful expansion board designed for use with the Raspberry Pi.2. It connects to the Raspberry Pi 5 via a 16-pin ribbon cable.3. It features an onboard M.2 E-Key slot, compatible with various NGFF (M.2 E-Key) wireless network cards.4. It supports USB Bluetooth connectivity, offering users expanded functionality.5. Do not connect or disconnect any device interfaces—except for the 2-pin USB port—while the power is on.Specification: Package Weight One Package Weight 0.12kgs / 0.27lb One Package Size 10cm * 8cm * 4cm / 3.94inch * 3.15inch * 1.57inch Qty per Carton 128 Carton Weight 16.50kgs / 36.38lb Carton Size 42cm * 34cm * 34cm / 16.54inch * 13.39inch * 13.39inch Loading Container 20GP: 549 cartons * 128 pcs = 70272 pcs 40HQ: 1275 cartons * 128 pcs = 163200 pcs

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1. This is a 1.54inch IPS touch color display module featuring 240×240 high resolution, supporting 262K true color display. It delivers clear and delicate visuals with excellent performance. Equipped with a high-transmittance capacitive touch panel, it offers responsive touch sensing and long service life. The module integrates the ST7789S display driver IC and the CST816D capacitive touch IC, communicating via SPI and I2C interfaces respectively, which minimizes pin usage and simplifies hardware integration. An onboard level shifter ensures compatibility with both 3.3V and 5V power inputs, allowing seamless connection to mainstream controller platforms such as Raspberry Pi, ESP32, Pico, Arduino, and STM32.2. Operating voltage: 3.3V / 5V3. Resolution: 240 × 240 pixels4. Display driver: ST7789S5. Touch controller: CST816D6. Display interface: 4-wire SPI7. Touch interface: I2C8. Display panel: IPS9. Touch type: Capacitive10. Display size: 27.72 × 27.72 mm11. Pixel size: 0.1155 × 0.1155 mm12. Product dimensions: 40.2 × 40.2 mmSpecification: Package Weight One Package Weight 0.05kgs / 0.12lb One Package Size 8cm * 8cm * 5cm / 3.15inch * 3.15inch * 1.97inch Qty per Carton 120 Carton Weight 7.10kgs / 15.65lb Carton Size 34cm * 42cm * 32cm / 13.39inch * 16.54inch * 12.6inch Loading Container 20GP: 583 cartons * 120 pcs = 69960 pcs 40HQ: 1354 cartons * 120 pcs = 162480 pcs

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1. The ESP32-C6-ePaper-1.54 is an e-Paper AIoT development board, equipped with ESP32-C6 microcontroller, which supports Wi-Fi and BLE dual-mode communication. Onboard 1.54inch e-paper display, features ultra-low power consumption and ambient light readability, suitable for portable devices and long-Batt-life scenarios. Integrated with an RTC chip, SHTC3 temperature and humidity sensor, TF card slot, low-power audio codec chip circuit, and Lithium Batt recharge management circuit. Reserved interfaces including USB, UART, I2C, and GPIO for easy functionality expansion and sensor connectivity, providing a flexible and reliable development platform for IoT terminals, electronic tags, portable displays, and other applications.2. Equipped with high-performance ESP32-C6 32-bit RISC-V processor, up to 160MHz main frequency3. Supports Wi-Fi 6, Bluetooth 5 and IEEE 802.15.4 (Zigbee 3.0 and Thread) wireless communication, with superior RF performance4. Built-in 512KB HP Static RAM, 16KB LP Static RAM, 320KB ROM, and external 16MB Flash memory5. Onboard 1.54inch e-paper display, 200 × 200 resolution, features high contrast and wide viewing angle6. Onboard audio codec chip, supports voice capture and playback, enabling AI voice interaction applications7. Onboard PCF85063 RTC chip and SHTC3 temperature & humidity sensor for accurate RTC management and environmental monitoring8. Onboard TF card slot for external storage of images or files9. Onboard programmable PWR and BOOT side buttons for customized function development10. Reserved 2 × 6 2.54mm pitch pin header for convenient external expansionSpecifications:1. Display Panel: E-Ink display2. Display Size: 1.54 inches3. Resolution: 200 × 2004. Grayscale Levels: 25. Communication Interface: SPI6. Full Refresh Time: 2s7. Display Colors: Black, White8. Partial Refresh Time: 0.3s9. Viewing Angle: Greater than 170-degree10. Display Mode: ReflectiveSpecification: Package Weight One Package Weight 0.06kgs / 0.13lb One Package Size 7cm * 7cm * 5cm / 2.76inch * 2.76inch * 1.97inch Qty per Carton 180 Carton Weight 11.00kgs / 24.25lb Carton Size 47cm * 37cm * 30cm / 18.5inch * 14.57inch * 11.81inch Loading Container 20GP: 511 cartons * 180 pcs = 91980 pcs 40HQ: 1186 cartons * 180 pcs = 213480 pcs

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1. 4-inch/4.3-inch DSI touchscreen with 5-point capacitive touch control2. IPS display panel with a hardware resolution of 480×8003. Full lamination process for clearer image quality4. Toughened glass touch panel with 6H hardness5. DSI interface for LCD driving; refresh rate up to 60Hz6. Supports software-controlled backlight brightness7. Aluminum alloy back casing with a purely passive cooling design8. Default display orientation is portrait; landscape mode can be enabled via software settingsScreen Specifications:1. Resolution: 480 × 800 pixels (H × V)2. Contrast Ratio: 4-inch: 800:1; 4.3-inch: 1000:13. Display Driver IC: ST7701S4. Touch Controller IC: GT9115. Communication Interface: MIPI 2-lane6. Brightness: 4-inch: 350 cd/m2; 4.3-inch: 500 cd/m27. Outline Dimensions: 4-inch: 108.30 × 65.10 mm; 4.3-inch: 116.50 × 68.90 mm8. Display Area: 4-inch: 86.40 × 51.84 mm; 4.3-inch: 93.60 × 56.16 mmSpecification: Package Weight One Package Weight 0.12kgs / 0.27lb One Package Size 12cm * 10cm * 3cm / 4.72inch * 3.94inch * 1.18inch Qty per Carton 120 Carton Weight 15.50kgs / 34.17lb Carton Size 50cm * 32cm * 32cm / 19.69inch * 12.6inch * 12.6inch Loading Container 20GP: 520 cartons * 120 pcs = 62400 pcs 40HQ: 1209 cartons * 120 pcs = 145080 pcs

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1. 4-inch/4.3-inch DSI touchscreen with 5-point capacitive touch control2. IPS display panel with a hardware resolution of 480×8003. Full lamination process for clearer image quality4. Toughened glass touch panel with 6H hardness5. DSI interface for LCD driving; refresh rate up to 60Hz6. Supports software-controlled backlight brightness7. Aluminum alloy back casing with a purely passive cooling design8. Default display orientation is portrait; landscape mode can be enabled via software settingsScreen Specifications:1. Resolution: 480 × 800 pixels (H × V)2. Contrast Ratio: 4-inch: 800:1; 4.3-inch: 1000:13. Display Driver IC: ST7701S4. Touch Controller IC: GT9115. Communication Interface: MIPI 2-lane6. Brightness: 4-inch: 350 cd/m2; 4.3-inch: 500 cd/m27. Outline Dimensions: 4-inch: 108.30 × 65.10 mm; 4.3-inch: 116.50 × 68.90 mm8. Display Area: 4-inch: 86.40 × 51.84 mm; 4.3-inch: 93.60 × 56.16 mmSpecification: Package Weight One Package Weight 0.12kgs / 0.27lb One Package Size 12cm * 10cm * 3cm / 4.72inch * 3.94inch * 1.18inch Qty per Carton 120 Carton Weight 15.50kgs / 34.17lb Carton Size 50cm * 32cm * 32cm / 19.69inch * 12.6inch * 12.6inch Loading Container 20GP: 520 cartons * 120 pcs = 62400 pcs 40HQ: 1209 cartons * 120 pcs = 145080 pcs

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1. No backlight, keeps displaying last content for a long time even when power down2. Ultra low power consumption, basically power is only required for refreshing3. Comes with online development resources and manual (driver board schematic diagram and examples for Raspberry Pi / Jetson Nano / Arduino / STM32 / ESP32, etc.)Optional for e-Paper driver board:1. Standard Raspberry Pi 40PIN GPIO extension header, supports Raspberry Pi and Jetson Nano series boards2. Adopts Raspberry Pi HAT+ standard to improve interoperability, helping the users to design and develop faster, easy to use with other peripherals and extend more functions for Raspberry Pi3. Adapting SPI interface for connecting with controller boards like Raspberry Pi / Jetson Nano / Arduino / STM32 / ESP32, etc.4. Onboard voltage translator, compatible with 3.3V / 5V MCUsSpecifications:1. Operating voltage: Raw display: 3.3V3.3V；with driver board: 3.3V / 5V2. Display colors: Red, yellow, black, white3. Communication interface: 3-wire SPI, 4-wire SPI4. Grayscale levels: 25. Dimensions: Raw display: 105.33 × 62.37 × 0.91 mm; with driver board: 107.00 × 64.00 mm6. Full refresh time: 20s7. Display area: 92.80 × 55.68 mm8. Refresh power consumption: Less than 90mW9. Dot pitch: 0.116 × 0.116 mm10. Sleep current: Less than 0.01μA (near zero)11. Resolution: 800 × 480 pixels12. Viewing angle: Greater than 170-Specification: Package Weight One Package Weight 0.08kgs / 0.19lb One Package Size 14cm * 10cm * 3cm / 5.51inch * 3.94inch * 1.18inch Qty per Carton 128 Carton Weight 11.30kgs / 24.91lb Carton Size 50cm * 34cm * 34cm / 19.69inch * 13.39inch * 13.39inch Loading Container 20GP: 461 cartons * 128 pcs = 59008 pcs 40HQ: 1071 cartons * 128 pcs = 137088 pcs

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Features1. On-board SWD interface, and it can be programmed with ST-LINK V2.2. On-board test indicator LED, and the beginners can program to control it.3. On-board 100ma 3.3V Regulator.4. All GPIO are led out and the names of the pins are marked。5. Microcontroller: STM32F103C8T6.6. Burning times: 10k cycles7. Operating voltage: 3.3 V.8. IO logic voltage: 3.3V9. Digital I/O Pins: 37.10. Analog Input Pins: 10 (12bits).11. Flash Memory: 64KB.12. RAM: 20KB.13. Programmable Clock Speed: 72 MHz (MAX).Specification 1. Model: DTR-WG01582. Quantity: 1 set3. Color: Blue + Yellow4. Material: PCB + Alloy + Plastic5. Chipset: STM32F103C8T66. Dimensions (5.5 cm x 2.2 cm x 1.2 cm), weight (7.5g)7. Packing List: - 1 x STM32F103C8T6 development board- 2 x 1X20P pin headers (2.54mm pitch)Specification: Package Weight One Package Weight 0.03kgs / 0.07lb One Package Size 9cm * 3cm * 1cm / 3.54inch * 1.18inch * 0.39inch Qty per Carton 3120 Carton Weight 15.00kgs / 33.07lb Carton Size 54cm * 39cm * 40cm / 21.26inch * 15.35inch * 15.75inch Loading Container 20GP: 316 cartons * 3120 pcs = 985920 pcs 40HQ: 734 cartons * 3120 pcs = 2290080 pcs

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1. NRF24L01P + PA + LNA Division for the ultra-long-distance data transmission, specially developed high-power and high sensitivity wireless module 2.4G ISM band NRF24L01P + PA + LNA wireless module to work in the license-free that can be point-to-point applications or be composed of a star network.2. Digital transmission chip NRF24L01+ with the Division of Professional Design professional full two-way RF power amplifier high power PA and LNA chip, RF switches and band pass filters, makes effective communication distance greatly expand.3. RF part, it has been done a lot of optimization matching debugging. The emission efficiency to achieve the highest harmonic minimum and make NRF24L01P + PA + LNA wireless module of RF interference to the external equipment reaches minimum, while not susceptible to interference from other devices.4. NRF24L01P + PA + LNA wireless module integration is extremely high, the size is 41mm x 15.5mm to make conveniently embedded.5. Working Voltage: 3.0~3.6V, (recommended 3.3V); 6. Maximum power: 20dBm; 7. Transmit mode operating current (peak): 115mA; 8. Operating current receive mode (peak): 45mA; 9. Power-down mode current: 4.2uA10. Package List - 1 x Wireless module- 1 x AntennaSpecification: Package Weight One Package Weight 0.04kgs / 0.09lb One Package Size 6cm * 3cm * 1cm / 2.36inch * 1.18inch * 0.39inch Qty per Carton 5200 Carton Weight 15.00kgs / 33.07lb Carton Size 60cm * 39cm * 40cm / 23.62inch * 15.35inch * 15.75inch Loading Container 20GP: 284 cartons * 5200 pcs = 1476800 pcs 40HQ: 661 cartons * 5200 pcs = 3437200 pcs

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1. Type: MCU2. Number of pins: 03. Use: Instrument4. Application area: 3C digital5. Input voltage: 5V6. Charge cut-off voltage: 4.2V ±1%7. Maximum charging current: 1000mA8. Battery over-discharge protection voltage: 2.5V9. Battery overcurrent protection current: 3A10. Board size: 2.6*1.7CMSpecification: Package Weight One Package Weight 0.02kgs / 0.05lb One Package Size 10cm * 5cm * 5cm / 3.94inch * 1.97inch * 1.97inch Qty per Carton 510 Carton Weight 12.00kgs / 26.46lb Carton Size 30cm * 50cm * 40cm / 11.81inch * 19.69inch * 15.75inch Loading Container 20GP: 444 cartons * 510 pcs = 226440 pcs 40HQ: 1031 cartons * 510 pcs = 525810 pcs

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Thermostat parameters: 1. Voltage: 220V 2. Opening size: 45x45mm 3. Control method: PID control 4. Input method: K/EPT100 (optional) 5. Output mode: SSR solid state relay 6. Product size: 48x48x110mm Solid state module parameters: 1. Control method: DC control AC 2. Input voltage: 3-32V DC 3. Ambient temperature: -30 degrees Celsius to +70 degrees Celsius 4. Working frequency: 50-60Hz 5. Control current: 3-35mADC 6. Product size: 45x27x58mm 7. Product weight: 81g Screw type thermocouple parameters: 1. Model: K type 2. Screw specification: M6 inch 3. Lead length: 1 meter 4. Measuring range: 0-400 degrees Celsius 5. Wiring terminal: U-shaped terminal 6. Product weight: 16gSpecification: Package Weight One Package Weight 0.41kgs / 0.90lb One Package Size 13cm * 9cm * 6cm / 5.12inch * 3.54inch * 2.36inch Qty per Carton 50 Carton Weight 21.00kgs / 46.30lb Carton Size 47cm * 32cm * 28cm / 18.5inch * 12.6inch * 11.02inch Loading Container 20GP: 633 cartons * 50 pcs = 31650 pcs 40HQ: 1470 cartons * 50 pcs = 73500 pcs

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1. Type: Drive IC 2. Supply Voltage: 5V 3. Application: Computer 4. Language: English / Russia / Arabic / Persian 5. System supported: WinXP / Win7 / Win8 / Win2003 / Win2008 / WinVista 6. ead and write 8 pin and 16 pins chips those commonly used on computer motherboard, laptop, LCD, routers and home appliances 7. Read and write memory SPD DDR1/DDR2/DDR3 Free demolition chip, especially support 34C02 and other special part numbers 8. Support laptop 8 pin and 14 pin password chip and battery chip (especially 24RF08/6480AR/BR9080/9016 special part numbers 9. Support all series of 24,IIC EEPROM Memory.Besides, it can automatically identify chip model from 24C01 to 24C16,Automatic identify write protection level of the 24 series 7th pin. 10. Support all series of 25 and 26 SPI FLASH Memory,support identify the chips part number automaticly,the capacity is up to 256Mbit 11. Support all series 93 MircroWire Memory,including Japanese special chips 12. It is the only one programmer which have the function of supporting RTD2120 chip's double bank read and write online. Including the BANK0 which the firmware in and BANK1 area ,which menu in. It can read double BANK in only 6 seconds.Support RTD2122's three BANK read and write online. 13. Support reading and writing DDC-EDID data of LCD display and LCD TV online. Very easy to solve EDID data problems 14. Support reading and writing laptop screen EDID data online, very easy to solve the problem of DELL and SONY laptop's choose screen. Our store have screen wires sale 15. Support Leroy, Ding Branch, Rainbow Star, Triumph, Kang Yue and Wang Jie general driver board. Write the driver board MCU by VGA port without taking the components out of the board. The programmer software has a new additional function, it can restore the chips. If the board has been damaged when programming, it can be work normally with this function. Reduce many matters 16. Support to read and write firmware of LCD display and TV motherboard online and out off line. Support TPV, Proview, Samsung, LG, ACER, LENOVO, HP, IBM, BENQ, HKC, Hisense, Skyworth, Konka, Changhong, TCL , Haier, Prima and other major brands, support NOVATEK, MTK, the MST, Genesis, TSUM, SE, FT, REALTEK the Winbond WELTEND, MySoN, China and Asia micro and PIXELWORKS chipset solution, you can use the official ISP software or third-party software, take into account the functions's integrity and the user's ease of use 17. Support Samsung, Philips, AOC, BENQ, NESO use NT68F63/NT68F632/NT68F633 series MCU and WT61P4 models. Can read and write programmer free disassemble. The Samsung LCD has a common problem of missing programmer, you can solve this problem free disassemble with it. It has a special function of reading MCU original programmer online. It can read and save original programmers from the good MCU.Besides, it supports lastest SE1059 seriesa reading and writing. Easy to solve black screen problems 18. Support WINBOND series MCU as programming online, such as W78E65P-40,it can replcace the MCU of M6759,SM5964,SM89516,P89C51RD andTP2804 which are very easy be damaged 19. Support MTK series LCD and DVD program online. Such as MT2389,MT1379,MT8223 and 8226 etc. 20. Support SUNPLUS series DVD program online. Such as 8202D 8202S,8202L,8281 and 8200 etc. 21. Online support in nine series satellite receiver upgrade crack and the brick machine repair; including of Guoxin, Haier, China and Asia, NEC movement program online to read and write and demolition chip reader upgrade feature 22. USB-powered, communication automatically detects the programmer self-test mode, the the original ISP online programming mode pin disconnection detection, target board power detection function, offline reading and writing pin-contact detection and other special features during the burning of various types of failures can be identified and prompt, effective solution to read and write errors 23. Programming the internal high-speed MCU control to upgrade PC client software to complete the programmer's own feature upgrades, more compatible models; using USB interface, power supply and control, eliminating the need for bulky power adapter, easier to use; locking seat of the programming interface, there are anti-static and port the IO protection measures to ensure the reliability of the programmer 24. Recordable models constantly add, if there are special needs, you can contact with the company, part of the chip models can remotely add. 24,25,26,93 series chip and official ISP software, users can also customize the video tutorial to add, convenient to use. Gift 8G procedures and information, and provide long-term technical support, to welcome major brand service station order, such as over one hundred customizable software LOGO and special featuresSpecification: General Model RT809F Material Plastic Size 9.5*5*2.3cm Weight 79g Package Weight One Package Weight 0.10kgs / 0.22lb One Package Size 13.5cm * 13cm * 7cm / 5.31inch * 5.12inch * 2.76inch Qty per Carton 30 Carton Weight 9.40kgs / 20.72lb Carton Size 42cm * 32cm * 30cm / 16.54inch * 12.6inch * 11.81inch Loading Container 20GP: 661 cartons * 30 pcs = 19830 pcs 40HQ: 1535 cartons * 30 pcs = 46050 pcs

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1. Number of component pairs: 1272. Assembly pressure: 85N/cm23. Be sure to apply thermal grease when installing the radiator4. The literal is cold side, and the non-literal is hot side5. Packaging process: standard 704 silicone rubber seal around6. Packaging standard: foam box packaging, storage conditions ambient temperature -10 ~ 40 degrees Celsius7. Working environment: temperature range -55～83 degrees Celsius (excessive ambient temperature will directly affect the cooling efficiency)8. The working state of the cooling plate is that one side is cooling and the other side is heating, and the heating surface must be well dissipated during work. It is strictly forbidden to energize for more than 2 seconds without heat dissipation, so as to avoid overheating and burning.9. Dimensions: 12703: 40x40x4.0mm, 12709: 40x40x3.4mm, 12710: 40x40x3.4mm, 12715: 40x40x3 .3mm10. Other parameters:- 12703: Wire specification: lead length 310+/-5mm, RV standard wire, single head 5mm tin-plated, internal resistance: 4.0~4.3 ohms (ambient temperature 23+/-1 degrees Celsius, 1kHZ Ac test), working current: Imax=12 ( When starting at rated voltage), rated voltage: DC12V (Vmax: 15.5V), cooling power: Qcmax 27W- 12709: Current: less than or equal to 9A, temperature difference: less than or equal to 68 degrees Celsius, voltage: less than or equal to 15.2V, hot end temperature: 82W- 12710: Wire specification: lead length 300+/-5mm, RV standard wire, single head 5mm tin plated, internal resistance: 1.2~1.5 ohms (ambient temperature 23+/-1 degrees Celsius, 1kHZ Ac test), working current: Imax=10A ( 15Vmax voltage start), rated voltage: DC12V (Vmax: 15.5V), cooling power: Qcmax 92W- 12715: Voltage: less than or equal to 15.4V, current: less than or equal to 15A, cold output: 134WSpecification: Package Weight One Package Weight 0.02kgs / 0.05lb One Package Size 12cm * 12cm * 1cm / 4.72inch * 4.72inch * 0.39inch Qty per Carton 500 Carton Weight 11.00kgs / 24.25lb Carton Size 46cm * 32cm * 32cm / 18.11inch * 12.6inch * 12.6inch Loading Container 20GP: 566 cartons * 500 pcs = 283000 pcs 40HQ: 1314 cartons * 500 pcs = 657000 pcs

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1. Number of component pairs: 1272. Assembly pressure: 85N/cm23. Be sure to apply thermal grease when installing the radiator4. The literal is cold side, and the non-literal is hot side5. Packaging process: standard 704 silicone rubber seal around6. Packaging standard: foam box packaging, storage conditions ambient temperature -10 ~ 40 degrees Celsius7. Working environment: temperature range -55～83 degrees Celsius (excessive ambient temperature will directly affect the cooling efficiency)8. The working state of the cooling plate is that one side is cooling and the other side is heating, and the heating surface must be well dissipated during work. It is strictly forbidden to energize for more than 2 seconds without heat dissipation, so as to avoid overheating and burning.9. Dimensions: 12703: 40x40x4.0mm, 12709: 40x40x3.4mm, 12710: 40x40x3.4mm, 12715: 40x40x3 .3mm10. Other parameters:- 12703: Wire specification: lead length 310+/-5mm, RV standard wire, single head 5mm tin-plated, internal resistance: 4.0~4.3 ohms (ambient temperature 23+/-1 degrees Celsius, 1kHZ Ac test), working current: Imax=12 ( When starting at rated voltage), rated voltage: DC12V (Vmax: 15.5V), cooling power: Qcmax 27W- 12709: Current: less than or equal to 9A, temperature difference: less than or equal to 68 degrees Celsius, voltage: less than or equal to 15.2V, hot end temperature: 82W- 12710: Wire specification: lead length 300+/-5mm, RV standard wire, single head 5mm tin plated, internal resistance: 1.2~1.5 ohms (ambient temperature 23+/-1 degrees Celsius, 1kHZ Ac test), working current: Imax=10A ( 15Vmax voltage start), rated voltage: DC12V (Vmax: 15.5V), cooling power: Qcmax 92W- 12715: Voltage: less than or equal to 15.4V, current: less than or equal to 15A, cold output: 134WSpecification: Package Weight One Package Weight 0.02kgs / 0.05lb One Package Size 12cm * 12cm * 1cm / 4.72inch * 4.72inch * 0.39inch Qty per Carton 500 Carton Weight 11.00kgs / 24.25lb Carton Size 46cm * 32cm * 32cm / 18.11inch * 12.6inch * 12.6inch Loading Container 20GP: 566 cartons * 500 pcs = 283000 pcs 40HQ: 1314 cartons * 500 pcs = 657000 pcs

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1. Working voltage: DC 5-30V, input reverse polarity protection2. Rated current: 5A, up to 15A3. Power: up to 150W4. Working frequency: 1-99KHz adjustable, 1KHz step, default frequency 20KHZ5. Duty cycle: 0-100 percent, 1 percent step6. Hole size: about 7.5x3.9cm7. Appearance size: about 7.9x4.3x2.6 cm8. Weight: about 41gFeatures:1. Comes with a start and stop button, and can be controlled by an external switch to meet a variety of control needs2. Motor soft start function, the current increases slowly when starting the motor, no inrush current, effectively protects the motor and prolongs the service life of the motor3. The duty cycle, upper and lower limits of the duty cycle and operating frequency can be set, which is convenient foroperating characteristics of the machine4. The digital encoder knob adjusts the motor speed, with higher precision and better consistency5. With standard 5135 instrument shell, easy to installSpecification: Package Weight One Package Weight 0.07kgs / 0.16lb One Package Size 10cm * 6cm * 3cm / 3.94inch * 2.36inch * 1.18inch Qty per Carton 404 Carton Weight 30.00kgs / 66.14lb Carton Size 50cm * 50cm * 60cm / 19.69inch * 19.69inch * 23.62inch Loading Container 20GP: 177 cartons * 404 pcs = 71508 pcs 40HQ: 412 cartons * 404 pcs = 166448 pcs

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Features1. TPA3251D2 power amplifier chip scheme is adopted: TPA3251D2 is a high-performance class D power amplifier, which has class D efficiency and can bring real high-end sound quality. The device features advanced integrated feedback design and proprietary high-speed gate driver error correction (pure path TM HD). This technology can make the device maintain ultra-low distortion in the whole audio frequency band and show high-definition sound quality at the same time. 2. Bluetooth-compatible 5.1 audio power amplifier module: 2.1 dual channel stereo output, output power 220W * 2 (left and right channels) + 350W (subwoofer), pure HiFi sound quality. The treble is pure and transparent, the midrange is gentle and delicate, and the bass is surging and shocking. 3. Classic appearance multifunctional main knob: the main knob adopts rotary encoder only used in high-end power amplifier to realize 360 degree stepless tuning. It feels smooth, one key start and stop, long press to start and stop, and the operation is simple and convenient. 4. Support mobile app control: newly upgrade Sini link app; Support to modify Bluetooth-compatible name; Set Bluetooth-compatible password; Off / on tone 5. Supported audio input: Bluetooth-compatible 5.1, AUX, USB sound card, USB flash disk 6. Heat dissipation mechanism: Heat sink + fan for heat dissipation, safe and worry free. Large area aluminum alloy heat sink with special-shaped structure and fan support are adopted to reduce the temperature and effectively ensure the full power operation of the productSpecification1. Power supply: Above DC12-38V/10A 2. Bluetooth version: 5.1 3. Audio channel: 2.1 channels 4. Audio input: Bluetooth-compatible + AUX + USB flash disk + USB sound card 5. Audio output: left and right channels + subwoofer 6. Frequency range: 20Hz -- 20KHz 7. Volume adjustment: Encoder knob adjustment, smooth feel 8. Output power of left and right channels: - 220W/3ohms--36VDC - 175W/4ohms--36VDC - 100W/8ohms--36VDC 9. Output power of subwoofer: - 355W/2ohms--36VDC - 250W/3ohms--36VDC - 195W/4ohms-36VDC 10. Protection mechanism: Overvoltage, undervoltage, clipping, short circuit, overheating and other protection 11. Unique functions: Support sinlink app, modify Bluetooth-compatible name, set Bluetooth-compatible password, and turn off / on prompt tone 12. Product size: 130mm x 116mm x 27mmSpecification: Package Weight One Package Weight 0.42kgs / 0.92lb One Package Size 15cm * 12cm * 4cm / 5.91inch * 4.72inch * 1.57inch Qty per Carton 40 Carton Weight 17.00kgs / 37.48lb Carton Size 42cm * 25cm * 32cm / 16.54inch * 9.84inch * 12.6inch Loading Container 20GP: 793 cartons * 40 pcs = 31720 pcs 40HQ: 1842 cartons * 40 pcs = 73680 pcs

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1. Wide range of applications 2. Easy to operate 3. Small size 4. Stable performance 5. Voltage specification: 5V 6. Module size: 5 x 4.4 x 1.8cm (manual measurement) 7. Net weight: 24g 8. Module function: When the water level is lower than the B probe, the water is automatically pumped. 9. Stop pumping when the water level reaches the C probe. 10. The A/B/C water level sensing line can be used with ordinary wires, and the wire ends are exposed to 5CM. Automatically pump water when the water level is below point B 11. Stop pumping when the water level is above point CSpecification: Package Weight One Package Weight 0.04kgs / 0.08lb One Package Size 8cm * 6cm * 2cm / 3.15inch * 2.36inch * 0.79inch Qty per Carton 300 Carton Weight 11.50kgs / 25.35lb Carton Size 52cm * 42cm * 42cm / 20.47inch * 16.54inch * 16.54inch Loading Container 20GP: 290 cartons * 300 pcs = 87000 pcs 40HQ: 674 cartons * 300 pcs = 202200 pcs

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1. Stable and accurate, anti-interference2. There are 5 small lights to show the power level, applicable to inverter lithium battery power prompts3. Voltage range L1: 2S 8.4V: 4.5-5.5V; 3S 12.6V: 1.5-9V; 4S 16.8V: 8-10V; 4S 14.4V: 8-9V4. Voltage range L2: 2S 8.4V: 5.5-6.8V; 3S 12.6V: 9-11V; 4S 16.8V: 10-13V; 4S 14.4V: 9-11.4V5. Voltage range L3: 2S 8.4V: 6.8-7.4V; 3S 12.6V: 11-11.5V; 4S 16.8V: 13-15V; 4S 14.4V: 11.4-13.2V6. Voltage range L4: 2S 8.4V: 7.4-8.0V; 3S 12.6V: 11.5-12V; 4S 16.8V: 15-16V; 4S 14.4V: 13.2-14V7. Voltage range L5: 2S 8.4V: 8-8.4V; 3S 12.6V: 12-12.6V; 4S 16.8V: 16-16.8V; 4S 14.4V: 14-14.4V8. Weight: about 5.9g9. Dimensions: about 62 x 2.7 x 15.8mmUsage:1. During charging or discharging, press the red button lightly with your finger, the LED light will be on, and the current through the light board is about 30mA2. Release the finger, the LED light will go out, the light board circuit shutdown, no current through3. With reverse function, the line is connected to the wrong positive and negative no problem, adjusted over on itSpecification: Package Weight One Package Weight 0.01kgs / 0.03lb One Package Size 10cm * 8cm * 1cm / 3.94inch * 3.15inch * 0.39inch Qty per Carton 750 Carton Weight 6.50kgs / 14.33lb Carton Size 52cm * 42cm * 32cm / 20.47inch * 16.54inch * 12.6inch Loading Container 20GP: 381 cartons * 750 pcs = 285750 pcs 40HQ: 885 cartons * 750 pcs = 663750 pcs

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1. Stable and accurate, anti-interference2. There are 5 small lights to show the power level, applicable to inverter lithium battery power prompts3. Voltage range L1: 2S 8.4V: 4.5-5.5V; 3S 12.6V: 1.5-9V; 4S 16.8V: 8-10V; 4S 14.4V: 8-9V4. Voltage range L2: 2S 8.4V: 5.5-6.8V; 3S 12.6V: 9-11V; 4S 16.8V: 10-13V; 4S 14.4V: 9-11.4V5. Voltage range L3: 2S 8.4V: 6.8-7.4V; 3S 12.6V: 11-11.5V; 4S 16.8V: 13-15V; 4S 14.4V: 11.4-13.2V6. Voltage range L4: 2S 8.4V: 7.4-8.0V; 3S 12.6V: 11.5-12V; 4S 16.8V: 15-16V; 4S 14.4V: 13.2-14V7. Voltage range L5: 2S 8.4V: 8-8.4V; 3S 12.6V: 12-12.6V; 4S 16.8V: 16-16.8V; 4S 14.4V: 14-14.4V8. Weight: about 5.9g9. Dimensions: about 62 x 2.7 x 15.8mmUsage:1. During charging or discharging, press the red button lightly with your finger, the LED light will be on, and the current through the light board is about 30mA2. Release the finger, the LED light will go out, the light board circuit shutdown, no current through3. With reverse function, the line is connected to the wrong positive and negative no problem, adjusted over on itSpecification: Package Weight One Package Weight 0.01kgs / 0.03lb One Package Size 10cm * 8cm * 1cm / 3.94inch * 3.15inch * 0.39inch Qty per Carton 750 Carton Weight 6.50kgs / 14.33lb Carton Size 52cm * 42cm * 32cm / 20.47inch * 16.54inch * 12.6inch Loading Container 20GP: 381 cartons * 750 pcs = 285750 pcs 40HQ: 885 cartons * 750 pcs = 663750 pcs

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1. Stable and accurate, anti-interference2. There are 5 small lights to show the power level, applicable to inverter lithium battery power prompts3. Voltage range L1: 2S 8.4V: 4.5-5.5V; 3S 12.6V: 1.5-9V; 4S 16.8V: 8-10V; 4S 14.4V: 8-9V4. Voltage range L2: 2S 8.4V: 5.5-6.8V; 3S 12.6V: 9-11V; 4S 16.8V: 10-13V; 4S 14.4V: 9-11.4V5. Voltage range L3: 2S 8.4V: 6.8-7.4V; 3S 12.6V: 11-11.5V; 4S 16.8V: 13-15V; 4S 14.4V: 11.4-13.2V6. Voltage range L4: 2S 8.4V: 7.4-8.0V; 3S 12.6V: 11.5-12V; 4S 16.8V: 15-16V; 4S 14.4V: 13.2-14V7. Voltage range L5: 2S 8.4V: 8-8.4V; 3S 12.6V: 12-12.6V; 4S 16.8V: 16-16.8V; 4S 14.4V: 14-14.4V8. Weight: about 5.9g9. Dimensions: about 62 x 2.7 x 15.8mmUsage:1. During charging or discharging, press the red button lightly with your finger, the LED light will be on, and the current through the light board is about 30mA2. Release the finger, the LED light will go out, the light board circuit shutdown, no current through3. With reverse function, the line is connected to the wrong positive and negative no problem, adjusted over on itSpecification: Package Weight One Package Weight 0.01kgs / 0.03lb One Package Size 10cm * 8cm * 1cm / 3.94inch * 3.15inch * 0.39inch Qty per Carton 750 Carton Weight 6.50kgs / 14.33lb Carton Size 52cm * 42cm * 32cm / 20.47inch * 16.54inch * 12.6inch Loading Container 20GP: 381 cartons * 750 pcs = 285750 pcs 40HQ: 885 cartons * 750 pcs = 663750 pcs

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1. Stable and accurate, anti-interference2. There are 5 small lights to show the power level, applicable to inverter lithium battery power prompts3. Voltage range L1: 2S 8.4V: 4.5-5.5V; 3S 12.6V: 1.5-9V; 4S 16.8V: 8-10V; 4S 14.4V: 8-9V4. Voltage range L2: 2S 8.4V: 5.5-6.8V; 3S 12.6V: 9-11V; 4S 16.8V: 10-13V; 4S 14.4V: 9-11.4V5. Voltage range L3: 2S 8.4V: 6.8-7.4V; 3S 12.6V: 11-11.5V; 4S 16.8V: 13-15V; 4S 14.4V: 11.4-13.2V6. Voltage range L4: 2S 8.4V: 7.4-8.0V; 3S 12.6V: 11.5-12V; 4S 16.8V: 15-16V; 4S 14.4V: 13.2-14V7. Voltage range L5: 2S 8.4V: 8-8.4V; 3S 12.6V: 12-12.6V; 4S 16.8V: 16-16.8V; 4S 14.4V: 14-14.4V8. Weight: about 5.9g9. Dimensions: about 62 x 2.7 x 15.8mmUsage:1. During charging or discharging, press the red button lightly with your finger, the LED light will be on, and the current through the light board is about 30mA2. Release the finger, the LED light will go out, the light board circuit shutdown, no current through3. With reverse function, the line is connected to the wrong positive and negative no problem, adjusted over on itSpecification: Package Weight One Package Weight 0.01kgs / 0.03lb One Package Size 10cm * 8cm * 1cm / 3.94inch * 3.15inch * 0.39inch Qty per Carton 750 Carton Weight 6.50kgs / 14.33lb Carton Size 52cm * 42cm * 32cm / 20.47inch * 16.54inch * 12.6inch Loading Container 20GP: 381 cartons * 750 pcs = 285750 pcs 40HQ: 885 cartons * 750 pcs = 663750 pcs

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Features1. Its work is characterized by side refrigeration and side fever2. Hot and cold on both sides of the temperature difference of 68 degrees3. Connected to the 12-volt power supply cooling piece on both sides there will be difference in temperature, side cold side of the heat, do not long power cooler radiator, otherwise it will cause cooler internal overheating and burning4. These devices must be used in conjunction with a heat sink to avoid burned5. Each device is full inspected and tested6. Fitted with 6-inch insulated leadsSpecification1. Size: 40mm x 40mm2. Operates from 0~15.2V and 0~6A3. Operates Temperature: -30C to 70C4. Max power consumption: 60W5. Material：Semiconductor/ceramic plates4. Package included: 1 x cooler plate moduleInstallationCooling piece is very simple to install and use. Before installation, to find a dry cell, connected to the two leads of the cooler, obviously cold you can feel at one end and the other end of fever, remember that the polarity of the lead and determine a good cooler cold and hot end. If you want to get a bigger system Ling, it is recommended that two cooling mode, with two stack up with the above, a grim absorption following a fever, the experiments prove two refrigeration effect is much better than the single-stage, the condition can choose three, of course, have a large power supply support.Specification: Package Weight One Package Weight 0.03kgs / 0.07lb One Package Size 5cm * 5cm * 1cm / 1.97inch * 1.97inch * 0.39inch Qty per Carton 2560 Carton Weight 15.00kgs / 33.07lb Carton Size 40cm * 40cm * 40cm / 15.75inch * 15.75inch * 15.75inch Loading Container 20GP: 416 cartons * 2560 pcs = 1064960 pcs 40HQ: 967 cartons * 2560 pcs = 2475520 pcs

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1. Function of this aluminum heat sink is to cool down the board and make it operate safely2. The aluminum heat sink can reduce the risk of hardware failure because of overheating3. Will cool more LEDs if work with a fan3. Material: Aluminum4. Color: Black5. Weight: 15g6. Size: 40 x 40 x 11mm7. Application: LED, Power IC, Memory, Transistor etc.3. Package included:1 x Aluminum heat sink 40 x 40 x 11mmSpecification: Package Weight One Package Weight 0.03kgs / 0.07lb One Package Size 6cm * 6cm * 1cm / 2.36inch * 2.36inch * 0.39inch Qty per Carton 1440 Carton Weight 15.00kgs / 33.07lb Carton Size 36cm * 36cm * 40cm / 14.17inch * 14.17inch * 15.75inch Loading Container 20GP: 514 cartons * 1440 pcs = 740160 pcs 40HQ: 1194 cartons * 1440 pcs = 1719360 pcs

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1. Humidity range: 0-1002. Material physical properties: semiconductor3. Output signal: digital4. Working voltage: 3.3V-5V5. Size: 3cm * 1.6cm6. Features: LM393 chip, stable operation, fixed bolt holes for easy installation, dual output mode of the module, simple digital output, more accurate analog output, and adjustable sensitivitySpecification: Package Weight One Package Weight 0.02kgs / 0.04lb One Package Size 5cm * 5cm * 2cm / 1.97inch * 1.97inch * 0.79inch Qty per Carton 500 Carton Weight 9.00kgs / 19.84lb Carton Size 39cm * 39cm * 15cm / 15.35inch * 15.35inch * 5.91inch Loading Container 20GP: 1168 cartons * 500 pcs = 584000 pcs 40HQ: 2713 cartons * 500 pcs = 1356500 pcs

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Technical specifications:1. Support sampling rate (KHz): 8/11.025/12/16/22.05/24/32/44.1/482. 24-bit DAC output, dynamic range support: 90dB, signal-to-noise ratio support: 85dB3. Fully support FAT16, FAT32 file system, support 32G TF card, support 32G U disk, 64M byte NORFLASH4. A variety of control modes are available. IO control mode, serial port mode, AD button control mode5. The broadcast language insertion function, you can pause the background music that is playing. After the ad is played, return to the background sound to continue playing6. The audio data is sorted by folder, supporting 100 folders at most, and 255 tracks can be assigned to every folder7. 30 levels of volume adjustable, 6 levels of EQ adjustableApplication range:1. Car navigation voice broadcast2. Highway transportation inspection, toll station voice prompt3. Voice prompts for safety inspections at railway stations and bus stations4. Voice prompts for power, communications, and financial business offices5. Voice prompts for vehicle entry and exit channel verification6. Voice prompts for border inspection channels7. Multi-channel voice alarm or equipment operation guidance voice8. Voice notice for safe driving of electric sightseeing cars9. Automatic alarm for mechanical and electrical equipment failure10. Fire alarm prompt11. Automatic broadcast equipment, regular broadcastProduct description:1. Can be directly connected to speakers2. The module can be used alone with the power supply battery, speakers, and buttons, or can be controlled through the serial port, as a module of UNO or any single-chip microcomputer with a serial port3. The module itself perfectly integrates the hard decoding of MP3, WAV and WMA. At the same time, the software supports TF card driver, supports FAT16, FAT32 file system4. Through simple serial port commands, you can complete the functions of playing the specified music and how to play the music. There is no need for cumbersome underlying operations, easy to use, stable and reliableSpecification: Package Weight One Package Weight 0.02kgs / 0.05lb One Package Size 12cm * 8cm * 2cm / 4.72inch * 3.15inch * 0.79inch Qty per Carton 300 Carton Weight 7.00kgs / 15.43lb Carton Size 46cm * 32cm * 32cm / 18.11inch * 12.6inch * 12.6inch Loading Container 20GP: 566 cartons * 300 pcs = 169800 pcs 40HQ: 1314 cartons * 300 pcs = 394200 pcs

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1. Voltage: DC 2.5-5.5V. 2. Output Power: 3W + 3W (at 4 ohm). 3. Noise ratio: 90dB. 4. Efficiency: more than 90 percent. 5. 2 channels 3W amplifier with PAM8403. 6. Output is CMOS BTL driver. 7. Cannot change any component parameters to protect IC. 8. The board can also be powered by 5V USB power supply or 4 x 1.5V battery. 9. It is perfect for MP3, MP4 and notebook.Specification: General Model LDTR-WG0126 Material Circuit Board Size 2.3*1.6*0.2cm / 0.91*0.63*0.08inch Weight 6g Package Weight One Package Weight 0.03kgs / 0.07lb One Package Size 6cm * 5cm * 2cm / 2.36inch * 1.97inch * 0.79inch Qty per Carton 400 Carton Weight 11.50kgs / 25.35lb Carton Size 42cm * 22cm * 32cm / 16.54inch * 8.66inch * 12.6inch Loading Container 20GP: 901 cartons * 400 pcs = 360400 pcs 40HQ: 2093 cartons * 400 pcs = 837200 pcs

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1. The USB to RS232 converter cable provides simple and easy way to connect universal serial bus (USB) and serial port interface. 2. Via this adapter cable, you can utilize the peripheral with serial port interface in an easy-use environment such as plug the play hot swap function. 3. This adapter is designed for ideal connections to cellular phone, digital camera, modems or ISDN terminal adapter with max. 1 Mbps data transfer rate. 4. Application: Convert USB port to RS232 serial port.Specification: General Model LDTR-WG0128 Material PVC Connectors USB 2.0, RS232 Cable Length 80cm Weight 43g Package Weight One Package Weight 0.06kgs / 0.14lb One Package Size 12cm * 8cm * 3.5cm / 4.72inch * 3.15inch * 1.38inch Qty per Carton 100 Carton Weight 6.50kgs / 14.33lb Carton Size 42cm * 37cm * 26cm / 16.54inch * 14.57inch * 10.24inch Loading Container 20GP: 660 cartons * 100 pcs = 66000 pcs 40HQ: 1532 cartons * 100 pcs = 153200 pcs

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1. Double decks for 4pcs AA batteries. 2. Easy to connect to other devices with 18cm cable. 3. Able to make 6V battery pack from alkaline cells. 4. Perfect external power source for Arduino system.Specification: General Model LDTR-DJ002 Types Electric Components Material Plastic Cable Length 18cm Size 5.7*3*2.8cm / 2.24*1.18*1.1inch Weight 10g Package Weight One Package Weight 0.03kgs / 0.06lb One Package Size 10cm * 6cm * 3cm / 3.94inch * 2.36inch * 1.18inch Qty per Carton 200 Carton Weight 5.00kgs / 11.02lb Carton Size 42cm * 32cm * 32cm / 16.54inch * 12.6inch * 12.6inch Loading Container 20GP: 620 cartons * 200 pcs = 124000 pcs 40HQ: 1439 cartons * 200 pcs = 287800 pcs

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1. Resistance range: 100 ohm - 10K ohm. 2. It is widely used to adjust timer, speed, temperature. 3. For MCU experiment.Specification: General Model WXD3 - 13 - 2W Size 5.7*2.6*2 cm Weight 23g Package Weight One Package Weight 0.05kgs / 0.12lb One Package Size 8cm * 5cm * 3cm / 3.15inch * 1.97inch * 1.18inch Qty per Carton 120 Carton Weight 6.50kgs / 14.33lb Carton Size 32cm * 26cm * 22cm / 12.6inch * 10.24inch * 8.66inch Loading Container 20GP: 1456 cartons * 120 pcs = 174720 pcs 40HQ: 3382 cartons * 120 pcs = 405840 pcs

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1. Low standby current.through the I2C bus serial input / output. 2. PCF8591 by 3 hardware address pins addressing. Sampling rate PCF8591 I2C bus rate decided. 3. 4 analog inputs programmable as single-ended or differential inputs.Automatic incremental channel selection 4. PCF8591 analog voltage range from VSS to VDD.PCF8591 built-in track and hold circuit. 5. 8-bit successive approximation A / D converter. through an analog output DAC gain. module chip using PCF8951 . 6. Working Voltage : 2.5-6V Specification: General Size 3.6*2.3cm Weight 8g Package Weight One Package Weight 0.03kgs / 0.06lb One Package Size 9cm * 7cm * 5cm / 3.54inch * 2.76inch * 1.97inch Qty per Carton 120 Carton Weight 3.00kgs / 6.61lb Carton Size 34cm * 26cm * 22cm / 13.39inch * 10.24inch * 8.66inch Loading Container 20GP: 1371 cartons * 120 pcs = 164520 pcs 40HQ: 3183 cartons * 120 pcs = 381960 pcs

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1. Works with official Arduino boards 2. This is an I2C controlled PWM driver board with a built-in clock 3. You can use 3.3V MCU to control and drive the output up to 6V 4. 6 address select pins allow you to connect 62 driver boards to one I2C bus, total 992 channels of PWM output 5. About 1.6KHz frequency modulation PWM output 6. PCA9685 chip is at the center of the board 7. With power input terminal 8. With green power indicator light 9. Convenient to insert total 16 servos at the same time 10. With reverse polarity protection for input 11. Cascade design 12. Put a bulky capacitor on the V+ line 13. Put 220 ohm resistance components onto all PWM output linesSpecification: General Size 6.2*2.6*1.2cm Weight 10g Package Weight One Package Weight 0.03kgs / 0.07lb One Package Size 8cm * 5cm * 2.5cm / 3.15inch * 1.97inch * 0.98inch Qty per Carton 120 Carton Weight 4.20kgs / 9.26lb Carton Size 34cm * 27cm * 22cm / 13.39inch * 10.63inch * 8.66inch Loading Container 20GP: 1320 cartons * 120 pcs = 158400 pcs 40HQ: 3065 cartons * 120 pcs = 367800 pcs

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1. Chip: MAX3232CSE 2. Voltage range: 3 v to 5 v 3. The highest baud rate : not recommended More than 120 KBPS 4. A converter board for electrical levels Specification: General Size 1.6*1cm Package Weight One Package Weight 0.02kgs / 0.05lb One Package Size 3cm * 3cm * 1.5cm / 1.18inch * 1.18inch * 0.59inch Qty per Carton 300 Carton Weight 5.20kgs / 11.46lb Carton Size 20cm * 17cm * 17cm / 7.87inch * 6.69inch * 6.69inch Loading Container 20GP: 4613 cartons * 300 pcs = 1383900 pcs 40HQ: 10710 cartons * 300 pcs = 3213000 pcs

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1. Onboard complex frequency decoder chip MT8870 2. Onboard voice input interface 3. Onboard five LED indicators for easy viewing output state 4. Basic pins of the chip have been drawn 5. For Arduino, Raspberry Pi, ARM MCU and moreSpecification: General Size 3*2.5*1cm Weight 4g Package Weight One Package Weight 0.03kgs / 0.06lb One Package Size 5cm * 4cm * 2.5cm / 1.97inch * 1.57inch * 0.98inch Qty per Carton 120 Carton Weight 3.00kgs / 6.61lb Carton Size 27cm * 18cm * 17cm / 10.63inch * 7.09inch * 6.69inch Loading Container 20GP: 3227 cartons * 120 pcs = 387240 pcs 40HQ: 7492 cartons * 120 pcs = 899040 pcs

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1. Material: PCB 2. Working voltage: 3.3 or 5V 3. On-board AMS1117 - 3.3 chip 4. Wireless module operating voltage is 3.3V, while the ordinary 51 single-chip is 5V 5. Connect wireless module with 51 single-chip system board 6. It is for NRF24L01 + wireless module 7. This is a simple socket board which is for NRF24L01 wireless moduleSpecification: General Size 2.6*1.3*1.2cm Weight 6g Package Weight One Package Weight 0.03kgs / 0.06lb One Package Size 6cm * 4cm * 2.5cm / 2.36inch * 1.57inch * 0.98inch Qty per Carton 120 Carton Weight 3.00kgs / 6.61lb Carton Size 27cm * 20cm * 18cm / 10.63inch * 7.87inch * 7.09inch Loading Container 20GP: 2743 cartons * 120 pcs = 329160 pcs 40HQ: 6368 cartons * 120 pcs = 764160 pcs

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1. Used as a square wave signal generator, which produces square wave signals for experimental development. 2. Used to generate square wave signals that can drive the stepper motor . 3. The adjustable pulse is generated for use of MCU. 4. Generate adjustable pulses to control the related circuits. 5. NOTE :When using a jumper cap to change the frequency, please cut off the power first, wait for the jump cap and then reconnect.Specification: General Material Plastic, Metal Size 3.5*2.5*1.5cm Weight 10g Package Weight One Package Weight 0.02kgs / 0.04lb One Package Size 3.5cm * 2.5cm * 1.5cm / 1.38inch * 0.98inch * 0.59inch Qty per Carton 500 Carton Weight 6.00kgs / 13.23lb Carton Size 35cm * 20cm * 15cm / 13.78inch * 7.87inch * 5.91inch Loading Container 20GP: 2539 cartons * 500 pcs = 1269500 pcs 40HQ: 5895 cartons * 500 pcs = 2947500 pcs

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Main Features: 1. The board uses a high-performance digital amplifier TDA8932 chip 2. Small size, high efficiency, high power, good sound quality, without additional installation of radiator 3. Suitable for the transformation of active speaker, product development, and other audio application Specification: 1. Material: PCB 2. Chipset: TDA8932 3. Operating voltage: single DC 10 - 30V ( 24V recommended voltage ) 4. Current: above 2A 5. Power output: 35W 6. Speaker impedance: 4 - 8 ohm ( 8 ohm is the best ) 7. Circuit configuration: mono BTL outputSpecification: General Types Amplifier Board Size 6.0*6.0*2.5 cm Weight 25 g Package Weight One Package Weight 0.03kgs / 0.07lb One Package Size 6cm * 6cm * 2.5cm / 2.36inch * 2.36inch * 0.98inch Qty per Carton 300 Carton Weight 8.60kgs / 18.96lb Carton Size 36cm * 30cm * 25cm / 14.17inch * 11.81inch * 9.84inch Loading Container 20GP: 987 cartons * 300 pcs = 296100 pcs 40HQ: 2292 cartons * 300 pcs = 687600 pcs

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1. Voltage: DC 12V2. Shaft diameter: 3mm D shaft3. High torque and stable operation4. Durable and long service life5. Low noise, low power consumption, small size6. Suitable for equipment, robots, cameras, hose machines, etc.7. Dimensions: 12x10x29mmSpecification: Package Weight One Package Weight 0.04kgs / 0.09lb One Package Size 3cm * 5cm * 3cm / 1.18inch * 1.97inch * 1.18inch Qty per Carton 500 Carton Weight 19.00kgs / 41.89lb Carton Size 23cm * 39cm * 23cm / 9.06inch * 15.35inch * 9.06inch Loading Container 20GP: 1292 cartons * 500 pcs = 646000 pcs 40HQ: 3000 cartons * 500 pcs = 1500000 pcs

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This is 28YBJ-48 DC 5V 4 phase 5 wire stepper motor with ULN2003 driver board, 5-wire phase can drive ordinary uln2003 chip can also be connected as phase 2 may be supporting the development board, direct plug, easy to use stepper motor used in the development boardMotor1. Diameter: 28mm2. Voltage: 5V3. Step angle: 5.625 x 1/644. Reduction ratio: 1/64ULN2003 driver board1. A, B, C, D LED indication Four-phase stepper motor work status2. Size: 31x35mmPackage included1. 1 x ULN2003 driver board2. 1 x 28BYJ-48 stepper motorSpecification: Package Weight One Package Weight 0.10kgs / 0.22lb One Package Size 3cm * 3cm * 1cm / 1.18inch * 1.18inch * 0.39inch Qty per Carton 6760 Carton Weight 15.00kgs / 33.07lb Carton Size 39cm * 39cm * 40cm / 15.35inch * 15.35inch * 15.75inch Loading Container 20GP: 438 cartons * 6760 pcs = 2960880 pcs 40HQ: 1017 cartons * 6760 pcs = 6874920 pcs

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1. Metal gear, stable transmission and wear-resistant2. Pure copper motor, effectively insulates dust and high temperature3. 304 stainless steel folding, high-precision gear box4. Features: Durable, dust-proof, anti-skid, high temperature resistance, abrasion resistance5. Rated voltage: 6/12v6. Application: electronic locks, smart cars, robots, cameras, etc.7. Size: about 14x17x35mm8. Material: 304 stainless steelSpecification: Package Weight One Package Weight 0.06kgs / 0.14lb One Package Size 10cm * 6cm * 3cm / 3.94inch * 2.36inch * 1.18inch Qty per Carton 200 Carton Weight 1.00kgs / 2.20lb Carton Size 46cm * 32cm * 32cm / 18.11inch * 12.6inch * 12.6inch Loading Container 20GP: 566 cartons * 200 pcs = 113200 pcs 40HQ: 1314 cartons * 200 pcs = 262800 pcs

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1. Metal gear, stable transmission and wear-resistant2. Pure copper motor, effectively insulates dust and high temperature3. 304 stainless steel folding, high-precision gear box4. Features: Durable, dust-proof, anti-skid, high temperature resistance, abrasion resistance5. Rated voltage: 6/12v6. Application: electronic locks, smart cars, robots, cameras, etc.7. Size: about 14x17x35mm8. Material: 304 stainless steelSpecification: Package Weight One Package Weight 0.06kgs / 0.14lb One Package Size 10cm * 6cm * 3cm / 3.94inch * 2.36inch * 1.18inch Qty per Carton 200 Carton Weight 1.00kgs / 2.20lb Carton Size 46cm * 32cm * 32cm / 18.11inch * 12.6inch * 12.6inch Loading Container 20GP: 566 cartons * 200 pcs = 113200 pcs 40HQ: 1314 cartons * 200 pcs = 262800 pcs

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1. Metal gear, stable transmission and wear-resistant2. Pure copper motor, effectively insulates dust and high temperature3. 304 stainless steel folding, high-precision gear box4. Features: Durable, dust-proof, anti-skid, high temperature resistance, abrasion resistance5. Rated voltage: 6/12v6. Application: electronic locks, smart cars, robots, cameras, etc.7. Size: about 14x17x35mm8. Material: 304 stainless steelSpecification: Package Weight One Package Weight 0.06kgs / 0.14lb One Package Size 10cm * 6cm * 3cm / 3.94inch * 2.36inch * 1.18inch Qty per Carton 200 Carton Weight 1.00kgs / 2.20lb Carton Size 46cm * 32cm * 32cm / 18.11inch * 12.6inch * 12.6inch Loading Container 20GP: 566 cartons * 200 pcs = 113200 pcs 40HQ: 1314 cartons * 200 pcs = 262800 pcs

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1. Metal gear, stable transmission and wear-resistant2. Pure copper motor, effectively insulates dust and high temperature3. 304 stainless steel folding, high-precision gear box4. Features: Durable, dust-proof, anti-skid, high temperature resistance, abrasion resistance5. Rated voltage: 6/12v6. Application: electronic locks, smart cars, robots, cameras, etc.7. Size: about 14x17x35mm8. Material: 304 stainless steelSpecification: Package Weight One Package Weight 0.06kgs / 0.14lb One Package Size 10cm * 6cm * 3cm / 3.94inch * 2.36inch * 1.18inch Qty per Carton 200 Carton Weight 1.00kgs / 2.20lb Carton Size 46cm * 32cm * 32cm / 18.11inch * 12.6inch * 12.6inch Loading Container 20GP: 566 cartons * 200 pcs = 113200 pcs 40HQ: 1314 cartons * 200 pcs = 262800 pcs

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1. Metal gear, stable transmission and wear-resistant2. Pure copper motor, effectively insulates dust and high temperature3. 304 stainless steel folding, high-precision gear box4. Features: Durable, dust-proof, anti-skid, high temperature resistance, abrasion resistance5. Rated voltage: 6/12v6. Application: electronic locks, smart cars, robots, cameras, etc.7. Size: about 14x17x35mm8. Material: 304 stainless steelSpecification: Package Weight One Package Weight 0.06kgs / 0.14lb One Package Size 10cm * 6cm * 3cm / 3.94inch * 2.36inch * 1.18inch Qty per Carton 200 Carton Weight 1.00kgs / 2.20lb Carton Size 46cm * 32cm * 32cm / 18.11inch * 12.6inch * 12.6inch Loading Container 20GP: 566 cartons * 200 pcs = 113200 pcs 40HQ: 1314 cartons * 200 pcs = 262800 pcs

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1. Metal gear, stable transmission and wear-resistant2. Pure copper motor, effectively insulates dust and high temperature3. 304 stainless steel folding, high-precision gear box4. Features: Durable, dust-proof, anti-skid, high temperature resistance, abrasion resistance5. Rated voltage: 6/12v6. Application: electronic locks, smart cars, robots, cameras, etc.7. Size: about 14x17x35mm8. Material: 304 stainless steelSpecification: Package Weight One Package Weight 0.06kgs / 0.14lb One Package Size 10cm * 6cm * 3cm / 3.94inch * 2.36inch * 1.18inch Qty per Carton 200 Carton Weight 1.00kgs / 2.20lb Carton Size 46cm * 32cm * 32cm / 18.11inch * 12.6inch * 12.6inch Loading Container 20GP: 566 cartons * 200 pcs = 113200 pcs 40HQ: 1314 cartons * 200 pcs = 262800 pcs

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