DIY Parts & Components

1. Using the rotary encoder used in high-end speakers, stepless tuning, smooth hand feel, one-key start and stop 2. High-quality all-copper DC plug, long life 3. 3.5mm audio output, connected to active power box 4. Free large area heat sink 5. Number of channels: Left and right dual channel (stereo) 6. Protection mechanism: Power reverse connection protection, short circuit protection, self-recovery overheat protection 7. Purpose: Bluetooth speaker amplifier motherboard 8. Bluetooth version: 5.0 9. Adapter speaker: 0-200W 4 ohm 8 ohm 16 ohm 10. Transmission distance: 15 meters (without blocking) 11. Supply voltage: DC 5-24V 12. Dimensions: 56x50x18mm

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1. Using the rotary encoder used in high-end speakers, stepless tuning, smooth hand feel, one-key start and stop 2. High-quality all-copper DC plug, long life 3. 3.5mm audio output, connected to active power box 4. Free large area heat sink 5. Number of channels: Left and right dual channel (stereo) 6. Protection mechanism: Power reverse connection protection, short circuit protection, self-recovery overheat protection 7. Purpose: Bluetooth speaker amplifier motherboard 8. Bluetooth version: 5.0 9. Adapter speaker: 0-200W 4 ohm 8 ohm 16 ohm 10. Transmission distance: 15 meters (without blocking) 11. Supply voltage: DC 5-24V 12. Dimensions: 56x50x18mm

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1. Model: XY-S220H 2. Item: 2.1 channel Bluetooth-compatible audio amplifier board 3. Power supply: above DC12-38V/10A 4. Bluetooth-compatible version: 5.1 5. Audio channel: 2.1 channel 6. Audio input: Bluetooth-compatible+AUX+U disk+USB sound card 7. Audio output: left and right channels + subwoofer 8. Frequency range: 20HZ--20KHZ 9. Volume adjustment: high-end encoder knob adjustment, smooth feel 10. Left and right channel maximum output power: 160W/4ohms----36V DC, 80W/8ohms---36V DC 11. Subwoofer maximum output power: 220W/3ohms----36V DC, 160W/4ohms----36V DC 12. Protection mechanism: overvoltage, undervoltage, clipping, short circuit, overheating, etc. 13. Unique function: Support Sinilink-APP to modify the Bluetooth-compatible name, set the 14. Bluetooth-compatible password, turn off/on the prompt tone

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1. Operating voltage: DC 3V-5V 2. Round board diameter: 1cm 3. Sensor distance: 3mm 4. Cable length: 20cm 5. The touch sensor switch module and the back of the circuit board are touch-sensitive surfaces, and the double-sided adhesive is very convenient for pasting on the surface of glass, plastic, rubber, acrylic, ceramics and other media. 6. Suitable for LED light control, support for external relays, power switch, microcontroller etc. low dropout design

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Notes1. The Micro:bit V2.0 board currently on sale in our store are V2.2 versions updated by BBC in 2022. The overall functions of the V2.2 board and the V2.0 board are the same, only little details are optimized and adjusted. 2. If you purchase this kit with Micro:bit V2.0, we will ship the V2.2 board by default. 3. 16-in-1 superkit programmable building block kit is designed based on BBC Micro:bit, which is composed of Super:bit expansion board, building block servo, Building block motor, battery and 358 building block parts. 4. We combine building blocks with electronic devices to bring your building blocks to life, and it can also play music and realize colorful lights. On the one hand, it allows children to learn programming. On the other hand, it can also cultivate children practical ability and stimulate creativity by assembling building blocks.Features1. Designed based on BBC Micro:bit, equipped with Super:bit professional expansion board. - Popular microcontrollers for children are suitable for STEAM education. - Super:bit expansion board specially designed for Micro:bit can integrate with building blocks well, build any shape, and drive building block servo, motor, RGB lights and other devices. 2. 16 kinds of building block models + full color printing project instruction manual - The building block parts of this kit are dominated by blue and white, the whole is full of science and technology,which can be assembled into N models. - The manual include assembly steps of 16 kinds of model and basic instruction content for programming. 3. MakeCode programming + Python programming, suitable for users with different ages. - MakeCode programming: Itcan effectively reduce learning threshold and improve children interest in learning by by dragging and splicing colorful building blocks - Python programming: A string of character commands control the building blocks, writing a wonderful chapter belonging to the Makers and building block enthusiasts. 4. Support APP/game handle remote control - When using different equipment to interact with the building blocks, user can experience the fun brought by technology. 5. Compatible with Lego building block, various gameplays - 16 kinds of models with up to 80+ gameplays, such as spider walking, helicopter propeller rotation, car wriggling, cannonball shooting, etc. - Users can also expand through more Lego bricks and build more interesting shapes.Specifications1. Applicable age: 8 years old and above 2. Programming language: MakeCode graphical programming/python programming 3. Remote control method: BT APP/ micro:bit gamepad 4. Main material: ABS 5. Onboard functions: RGB lights, buzzer, etc. 6. Number of building blocks: 358 high-precision building blocks 7. Motor/Servo: Motor x 2; Servo x 1 8. Operating temperature: 4-40 degrees Celsius

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About The ProtuctThis world of module programmable robot kit includes 1 professional sensor expansion board, 2 building block servos, 10 electronic sensor modules and 300+ building block parts. Support MakeCode and Python programming, suitable for users over 6 years old. We have created more than 20 kinds of models, and also provided detailed experimental cases for children to learn programming and sensor knowledge while playing with building blocks.Features19 kinds of modules 1. 4 kinds of key input modules: button module, potentiometer module, rocker module, collision module. 2. 9 kinds of sensor modules: gesture recognition module, human body infrared module, infrared module, photosensitive module, sound module, temperature-humidity module, ultrasonic module, vibration module, color recognition module. 3. 2 kinds of display modules: digital tube module, RGB module. 4. 1 kind of remote communication module: infrared receiving module. 5. 1 kind of motor drive module: vibration motor module 6. 2 kinds of voice interaction modules: buzzer module, speech broadcast module. 3 kinds of expansion boards 1. Micro:bit expansion board: suitable for Micro:bit board, using MakeCode graphical programming, suitable for young children. 2. Arduino sensor expansion board: suitable for Arduino UNO board, using Arduino IDE C++ programming, suitable for students with programming experience. 3. Pico expansion board: suitable for Pico board, using Python programming, suitable for Raspberry Pi fans. Compatible with Lego blocks - A building block expansion package is available. Use anti-reverse PH2.0 cable 1. Buy any module and get a 30cm PH2.0 cable for free. 2. Easy to plug, and can avoid users connecting the line wrongly. Environmentally friendly and beautiful private mode case 1. Perfectly compatible with every module and does not affect any wiring. 2. Using ABS material, beautiful and durable. 3. Block holes are reserved on the bottom and around the case, which can be fixed on the blocks.

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Notices1. The Micro:bit V2.0 board currently on sale in our store are V2.2 versions updated by BBC in 2022. The overall functions of the V2.2 board and the V2.0 board are the same, only little details are optimized and adjusted. 2. If you purchase this kit with Micro:bit V2.0, we will ship the V2.2 board by default. 3. Yahboom micro:bit smart robot is developed with the most popular Micro:bit board as the core controller. Using Micro:bit dot matrix screen as the body, the entire vehicle adopts elaborate metal motor, high-quality battery and firm bracket to create a compact and beautiful appearance. And it is controlled by Android mobile App remote controller connecting with Micro:bit onboard Bluetooth. We also offer three kinds of comprehensive courses: simple development board experiments, more complex expansion board experiments, and interesting smart robot experiments.It is the best choice for all makers, educators, and amateurs.Features1.The car is a collection of Micro:bit board, learning kits, and expansion boards, allowing you to learn Micro:bit from simplest to more complex. 2. The vehicle model is small and cute. Most of the parts are connected with screws and a few parts are designed with the anti-reverse socket, which makes installation simple and safe. 3. Multi-function expansion board with vertical slot structure as chassis of the vehicle, it is equipped with RGB lights, sensors, buzzers, various module interfaces and so on, Besides, it can drive 2 DC motors and 3 servos simultaneously. 4.It supports multiple functions: tracking, ultrasonic obstacle avoidance, following, light discoloration, singing, playing music, etc. 5. It can be controlled by an Infrared remote controller, and APP remote control by Android / iOS. 6. It supports JavaScript graphical programming, Python and other micro:bit programming methods 7. More than 30 kinds of experiment courses are provided.Package List1. Expansion board x 1 2. Vertical ultrasonic sensor(Include cable) x 1 3. Motor x 2 4. Acrylic board for ultrasonic sensor 5. Tire x 2 6. Micro usb cable x 1 7. Infrared remote control x 1 8. Screwdriver x 1 9. M3 x 40 copper pillar x 4 10. Bracket x 2 11. Magic sticker x 2 12. Instruction manual x 1 13 Universal wheel x 1 14. Motor bracket x 2 15. Screw & nut set x 1 16. Track x 1 17. Packing box x 1

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Notes1. The Micro:bit V2.0 board currently on sale in our store are V2.2 versions updated by BBC in 2022. The overall functions of the V2.2 board and the V2.0 board are the same, only little details are optimized and adjusted. 2. If you purchase this kit with Micro:bit V2.0, we will ship the V2.2 board by default. 3. Tiny:bit is a robotic car for the micro:bit education market. It is compact, easy to assemble, and easy to move in tight spaces. The Tiny:bit smart car is based on the micro:bit development board design and uses the online code programming of MakeCode and Python. Rich sensor applications allow Tiny:bit for easy interaction. The Tiny:bit smart car has a set of alligator clips on the rear that can be creative and expand.Features1. Simple design with small size. 2. Support Makecode graphical programming and Python programming. 3. "Interactive" Robotic car. 4. Alligator clip at the end. 5. Intelligent obstacle avoidance, following, playing music, tracking,Interesting lighting and APP supporting. 6. Compatible with building block.Package List1. Car chassis x 1 2. Remote control x 1 3. Motor x 2 4. Universal wheel x 1 5. Motor mounting x 2 6. Tire x 2 7. Micro USB cable x 1 8. Plastic rivet bag x 1 9. Line tracking map x 1 10. Manual x 1 11. Packing box x 1

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1. The PCI-E desktop computer will automatically turn on the machine when the power is restored, and it will automatically press the power-on button to start the machine when it is powered on, which does not affect the power-on/off function of the original machine. 2. Power supply: DC3-5V (blue light after normal power supply) 3. How to use: Turn off the 220V power supply of the computer, insert the module into the free PCI-E slot of the motherboard, and connect the power-on pins of the motherboard and the power-on button of the chassis with the supplied Dupont cable. Turn on the 220V power supply, and the blue light on the module lights up to indicate that the module has a normal power supply. After 2 seconds, the power-on signal will be automatically triggered, and the computer can be automatically turned on. 4. Purpose: computer automatically boots 5. Material: plastic

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1. USB intelligent temperature control electronic load; High power, high current, large voltage, intelligent control. LD25 is a cost-effective, economical intelligent electronic load. 2. OVP overvoltage protection (25V-30V overvoltage protection, digital display OVP, permanent damage after more than 30V); OPP over-power protection (load temperature is greater than 80 degree Celsius, the device stops working, digital display OTP); OTP over-temperature protection (power greater than 25W, equipment stops working, digital display OPP). 3. Provide 4A, 25V, 25W (3 values are not exceeded) constant current test discharge task. The friendly human-computer interface and excellent performance indicators can meet the diverse testing needs. 4. It is suitable for measuring the output current capability of the charger, using the bulk aging test of the charger factory, and measuring the quality of the Micro USB charging cable and the Type-C charging cable. 5. Specifications: Rated operational voltage: DC4-25.0V Max discharging power: 25W Rated operational current: 0.25-4.00A (when fan do not work, the minimum constant current is 0.05A ) Fan Speed: Large size intelligent temperature control fan, speed 5800+/-10%RPM Constant current resolution: +/-(1%+3 digits) Heat dispatch method: intelligent temperature control fan + all aluminum fan Working temperature: -10-40 degree Celsius Adjustable potentiometer: precision multiloop adjustable potentiometer Display mode: 4 bit LED tube Expansion port: Micro USB port, Type-C port Product weight: 57g Product size: 83.8x41.1x27.9mm

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1. Power supply: DC9-24V/2A and above 2. Bluetooth Version: 5.0 3. Audio input: Bluetooth + AUX input 4. Transmission distance: 15 meters (unobstructed) 5. Volume adjustment: high-end encoder knob adjustment, smooth feel 6. Adapter speaker: 10W-100W /4 ohm-16 ohm 7. Output power: 20Wx2 8. Protection mechanism: electrostatic protection, overheating protection, overcurrent protection, short circuit protection 9. Unique function: support Sinilink-APP control 10. Product size: 67 x 47 x 18mm 11. Material: PCB circuit board

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1. Power supply: DC9-24V/2A and above 2. Bluetooth Version: 5.0 3. Audio input: Bluetooth + AUX input 4. Transmission distance: 15 meters (unobstructed) 5. Volume adjustment: high-end encoder knob adjustment, smooth feel 6. Adapter speaker: 10W-100W /4 ohm-16 ohm 7. Output power: 20Wx2 8. Protection mechanism: electrostatic protection, overheating protection, overcurrent protection, short circuit protection 9. Unique function: support Sinilink-APP control 10. Product size: 67 x 47 x 18mm 11. Material: PCB circuit board

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1. Operating voltage: DC 8~24V 2. Operating mode: class D (PMW modulation) 3. Number of channels: ctereo (dual channel) 4. Maximum output power: 18Wx@12V 4 Ohm 10Wx@12V 8 Ohm 15Wx@16V 8 Ohm 20Wx@20V 8 Ohm 30Wx@24V 8 Ohm 5. Adapted speakers(30W~150W): 4 ohms (8-12V power supply) 8 ohm (8-24V power supply) 6. Module protection mechanism: power reverse connection protection, short circuit protection, self-recovery overheating protection

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一. Technical parameters:1. Working voltage: DC12V (3V/6V/9V/24V can be customized)2. Static working current: ≤10mA3. Working temperature: -40 degrees Celsius - +80 degrees Celsius4. Receiving sensitivity: greater than or equal to -95dB5. Working frequency: commonly used 315MHZ, 433.92MHZ (others can be customized)6. Output current: less than or equal to 10A7. Working mode: inching, self-locking, interlocking, delay (adjustable)8. Output mode: contact output (can control AC and DC)二. Scope of application:This product is controlled by an intelligent microprocessor, and can be applied to garage door control, lighting control, remote control curtains, access control systems and various motor control systems, etc. Small size, easy installation, safe and reliable use and so on.三. Product features:1. Output relay switching value: it can control loads with different voltages below 250V. Power supply must be 12V.2. Small size: small size, the size of the circuit board is only 35x30x17mm.3. The working mode can be adjusted by the user at will: the working mode of self-locking, interlocking, inching and delay can be adjusted by pin short circuit.4. Learning code pairing: you can learn to pair with the same frequency remote control at will (don’t worry if you lose the remote control during use, just buy a remote control and learn it, and you don’t need to replace the whole set, which greatly saves the user’s cost).四. Learn how to operate the code:1. Jog learning method:Press the pairing button on the control board once, and the LED indicator light will flash once, then press the remote control button that needs to be paired, and the LED indicator light on the control board will flash several times continuously, indicating that the code pairing is successful.2. Self-locking learning method:Press the pairing button on the control board twice in a row, the LED indicator light will flash twice, wait for the LED indicator to go out, and then press the button on the remote control that needs to be paired, the LED indicator light on the control board will flash several times continuously, indicating that the code pairing is successful.3. Interlocking learning method:Press the code pairing button on the control board 3 times in a row, and the LED indicator will flash 3 times. After the LED indicator is off, press the A button and B button on the remote control that needs to be coded, and the LED indicator on the control board will flash several times continuously. Indicates that the code pairing is successful.4. Learning method with a 5-second delay:Press the code pairing button on the control board 4 times continuously, and the LED indicator light will flash 4 times. After the LED indicator light goes out, then press the button on the remote control that needs to be coded. .5. Delay 10 seconds learning method:Press the code pairing button on the control board 5 times continuously, and the LED indicator will flash 5 times. After the LED indicator goes out, press the button on the remote control that needs to be coded. The LED indicator on the control board will flash several times continuously, indicating that the code is successful .6. 15-second delay learning method:Press the code pairing button on the control board 6 times continuously, and the LED indicator light will flash 6 times. After the LED indicator light goes out, press the button on the remote control that needs to be coded. The LED indicator light on the control board will flash several times continuously, indicating that the code pairing is successful .五. Precautions:1. Do not operate with power on. The power should be turned off for operation, and the power should be used after the test is confirmed to be correct.2. When the voltage of the remote control is low, please replace the battery in time (when the battery voltage of the remote control is low, the distance of the remote control generally becomes shorter).3. When using wireless electronic products, attention should be paid to avoid metal masks, large electronic equipment, electromagnetic fields and other strong interference sources, so as to avoid the short distance between the remote control and the receiving or not working properly.4. Do not use this electronic product abnormally. Abnormal use will reduce the performance and life of the product, and in severe cases, it will damage the product and bring hidden dangers to your safety.5. The delay time setting is automatically set when entering the learning mode. The delay time setting is associated with the number of times the learning key is pressed. Please pay special attention.

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1. Two passive outputs, can be independent output, also can be non-lock and latch output. dual control function, both hand control and remote control. learning button for stop function2. High receiving sensitivity, remote control distance up to 50-100m, using high-capacity relays, can control on the kilowatt of electrical appliances and equipment3. Adopt wireless coding technology, no direction, the switches do not interfere with each other. double limit, normally open type limit function. to the bit to give signal to the single-chip computer control output4. Operating voltage: DC12V5. Receiving frequency: 315MHZ6. Receiving sensitivity: -105db7. Working mode: pointing, interlocking, self-locking8. Load: up to 10A9. Coding type: learning type10. Coding mode: learning code11. Remote motor forward and reverse controller can change the working mode by learning different ways12. Scene application: mainly used to control the motor forward and reverse and stop, automatic doors, rolling shutter doors, etc.

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ZK-LT22:1. Bluetooth version: 5.12. Bluetooth transmission distance: 10m3. Audio input: Bluetooth + AUX + U disk + USB sound card4. Audio output: 15W for left channel + 15W for right channel + 30W for subwoofer5. Adaptable power supply: DC9-24V, 7A (not connectable to AC)6. Speaker: left and right channel 10-30W, 4-8 ohms; subwoofer 10-30W, 4-8 ohms7. Protection mechanism: over temperature, over current, short circuit, anti-static protection8. Feature function: support Wuzhi Audio APP, modify Bluetooth name, password setting, beep volume adjustment, on/off beep, sleep aid song, firmware upgrade, etc. Pair box function, true wireless function allows two sets of speakers to be combined into a left and right channel pair box, with a stronger sense of spatial positioning9. U-disk support for more HD lossless formatsBluetooth decoding chip, better resolution, support remote firmware update, support TWS function10. Separate volume adjustment for subwoofer and stereo output11. Total volume is mechanical potentiometer, volume position is clear at a glance, multi-button function is abundant12. Dimensions: 75x70x20cm13. Weight: 77gZK-LT23:1. Bluetooth version: 5.12. Bluetooth transmission distance: 10m3. Audio input: Bluetooth + AUX + U disk + USB sound card4. Audio output: 50W for left channel + 50W for right channel + 100W for subwoofer5. Adaptable power supply: DC9-24V, 7A (not connectable to AC)6. Speaker: left and right channel 10-50W, 4-8 ohms; subwoofer 20-50W, 4-8 ohms7. Protection mechanism: over temperature, over current, short circuit, anti-static protection8. Feature function: support Wuzhi Audio APP, modify Bluetooth name, password setting, beep volume adjustment, on/off beep, sleep aid song, firmware upgrade, etc. Pair box function, true wireless function allows two sets of speakers to be combined into a left and right channel pair box, with a stronger sense of spatial positioning9. U-disk support for more HD lossless formatsBluetooth decoding chip, better resolution, support remote firmware update, support TWS function10. Separate volume adjustment for subwoofer and stereo output11. Total volume is mechanical potentiometer, volume position is clear at a glance, multi-button function is rich12. Dimensions: 75x70x20cm13. Weight: 78g

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ZK-LT22:1. Bluetooth version: 5.12. Bluetooth transmission distance: 10m3. Audio input: Bluetooth + AUX + U disk + USB sound card4. Audio output: 15W for left channel + 15W for right channel + 30W for subwoofer5. Adaptable power supply: DC9-24V, 7A (not connectable to AC)6. Speaker: left and right channel 10-30W, 4-8 ohms; subwoofer 10-30W, 4-8 ohms7. Protection mechanism: over temperature, over current, short circuit, anti-static protection8. Feature function: support Wuzhi Audio APP, modify Bluetooth name, password setting, beep volume adjustment, on/off beep, sleep aid song, firmware upgrade, etc. Pair box function, true wireless function allows two sets of speakers to be combined into a left and right channel pair box, with a stronger sense of spatial positioning9. U-disk support for more HD lossless formatsBluetooth decoding chip, better resolution, support remote firmware update, support TWS function10. Separate volume adjustment for subwoofer and stereo output11. Total volume is mechanical potentiometer, volume position is clear at a glance, multi-button function is abundant12. Dimensions: 75x70x20cm13. Weight: 77gZK-LT23:1. Bluetooth version: 5.12. Bluetooth transmission distance: 10m3. Audio input: Bluetooth + AUX + U disk + USB sound card4. Audio output: 50W for left channel + 50W for right channel + 100W for subwoofer5. Adaptable power supply: DC9-24V, 7A (not connectable to AC)6. Speaker: left and right channel 10-50W, 4-8 ohms; subwoofer 20-50W, 4-8 ohms7. Protection mechanism: over temperature, over current, short circuit, anti-static protection8. Feature function: support Wuzhi Audio APP, modify Bluetooth name, password setting, beep volume adjustment, on/off beep, sleep aid song, firmware upgrade, etc. Pair box function, true wireless function allows two sets of speakers to be combined into a left and right channel pair box, with a stronger sense of spatial positioning9. U-disk support for more HD lossless formatsBluetooth decoding chip, better resolution, support remote firmware update, support TWS function10. Separate volume adjustment for subwoofer and stereo output11. Total volume is mechanical potentiometer, volume position is clear at a glance, multi-button function is rich12. Dimensions: 75x70x20cm13. Weight: 78g

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1. 12V power supply, power failure memory2. With bluetooth call and recording function, bluetooth version 5.03. Decode MP3, WMA, WAV, FLAC, APE lossless format music4. Read USB disk TF card5. Support FM radio, frequency band (87.5MHZ-108.0MHZ)6. External audio input LINE IN 7. Support 10m distance infrared remote control operation8. Pushbuttons: six buttons for multi-directional control, REC / REPEAT / VOL- / AUTO / VOL+ / MODE9. Large remote control uses 2 x 7 batteries (not included), small remote control uses button batteries10. Dimensions: length 112 x width 62 mm, depth 22 mmKey operation details:1. REC: Press the REC button to start recording, press the REC button again to cancel the recording function and play the recording file; when recording than a storage device needs to be connected, for example: U disk or TF card2. REPEAT: Press once for single song loop, then press again to cancel the single song loop and play in sequence3. PREV button (previous song/fast rewind): in MP3 state VOL-short press for previous song, long press for fast rewind; in FM state short press to adjust a station number upwards; in Bluetooth function short press for Bluetooth previous song4. AUTO button (play/pause): short press to play/pause in MP3; short press to play/pause in FM, long press to automatically receive and save the station; short press to play/pause in Bluetooth5. NEXT button (next track/fast forward): short press on VOL+ for next track in MP3, long press for fast forward; short press on FM to adjust a station number downwards; short press on Bluetooth for Bluetooth next track6. MODE button: switch between USB / SD card / FM / Audio input / Bluetooth function in sequence

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1. 12V power supply, power failure memory2. With bluetooth call and recording function, bluetooth version 5.03. Decode MP3, WMA, WAV, FLAC, APE lossless format music4. Read USB disk TF card5. Support FM radio, frequency band (87.5MHZ-108.0MHZ)6. External audio input LINE IN 7. Support 10m distance infrared remote control operation8. Pushbuttons: six buttons for multi-directional control, REC / REPEAT / VOL- / AUTO / VOL+ / MODE9. Large remote control uses 2 x 7 batteries (not included), small remote control uses button batteries10. Dimensions: length 112 x width 62 mm, depth 22 mmKey operation details:1. REC: Press the REC button to start recording, press the REC button again to cancel the recording function and play the recording file; when recording than a storage device needs to be connected, for example: U disk or TF card2. REPEAT: Press once for single song loop, then press again to cancel the single song loop and play in sequence3. PREV button (previous song/fast rewind): in MP3 state VOL-short press for previous song, long press for fast rewind; in FM state short press to adjust a station number upwards; in Bluetooth function short press for Bluetooth previous song4. AUTO button (play/pause): short press to play/pause in MP3; short press to play/pause in FM, long press to automatically receive and save the station; short press to play/pause in Bluetooth5. NEXT button (next track/fast forward): short press on VOL+ for next track in MP3, long press for fast forward; short press on FM to adjust a station number downwards; short press on Bluetooth for Bluetooth next track6. MODE button: switch between USB / SD card / FM / Audio input / Bluetooth function in sequence

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1. LCD screen display with synchronised lyrics2. Bluetooth call and recording function, Bluetooth version 5.03. Decode MP3, WMA, WAV, FLAC, APE lossless format music4. Read USB disk TF card5. Support FM radio, frequency band (87.5MHZ-108.0MHZ)6. External audio input LINE IN 7. Support 10m distance infrared remote control operation8. Pushbuttons: six buttons for multi-directional control, REC / REPEAT / VOL- / AUTO / VOL+ / MODE9. 12V power supply, power failure memory10. Dimensions: length 90 x width 57 mm; depth 28 mmKey operation details: 1. REC: press the REC button to start recording, press the REC button again to cancel the recording function and play the recording file; when recording than a storage device needs to be connected, e.g. U disk or TF card.2. REPEAT: Press once for the single song loop function, then press again to cancel the single song loop and play in sequence.3. VOL-key (previous song/volume down): short press for previous song in MP3 status, long press for volume down; short press for adjusting a station number upwards in FM status; short press for Bluetooth previous song in Bluetooth function, long press for volume down4. AUTO button (play/pause): short press for play/pause in MP3; short press for play/pause in FM, long press for auto receive and save station; short press for play/pause in BluetoothVOL+ button (next song/volume up): short press for next song in MP3, long press for volume up; short press for downward adjustment of a station number in FM; short press for next song in Bluetooth, long press for volume down6. MODE button: switch between USB / TF / FM / Audio input / Bluetooth function in sequence

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1. VGA-30W pixel, frame rate up to 30FPS under full HD VGA, smooth video output2. Driver-free plug-and-play, support UVC protocol, USB2.0 high-speed output, transfer rate of 480Mbps3. GC0308 HD sensor chip, low noise, low power consumption, high sensitivity4. Can be applied to face recognition, security monitoring, smart home, mobile payment, etc.5. Pixel: 0.3 megapixel (648x488)6. Light-sensitive chip: GC0308 (1/6.5 inch) CMOS7. Format: MJPEG, YUY2, YUV8. Frame rate: 30 fps 24Mhz, VGA9. Interface: USB2.0 driver-free, plug-and-play10. System compatibility: Windows, Android, Linux11. Size: about 38 x 38mm

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1. Support anti-shake, can be applied to cell phones, smart toys, PC multimedia, digital cameras, law enforcement, sports cameras, smart home, intelligent identification, car recorders, etc.2. OV5645 light-sensitive chip, high image quality, low noise, high sensitivity, low crosstalk, low power consumption3. Autofocus, with motor, support autofocus control AF VCM driver4. 5 megapixels, 2592x1944 resolution, support 1080P@30fps, support 720P 60 fps high-speed shooting5. Pixels: 5.0 megapixels (2592x1944)6. Light-sensitive chip: OV5645 (1/4 inch) CMOS7. Format: RGB/YUV8. Frame rate: QSXGA (2592x1944): 15 fps; 1080p: 30 fps; 1280x960: 45 fps; 720p: 60 fps9. Interface: MIPI10. Field of view/focal length: 67.4 degrees/3.37mm11. Size: about 21 x 8.5 x 5mm

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1. Suitable for intelligent identification system, smart home, visual doorbell, sports camera, drone products and other fields that require image acquisition2. HD 2 million pixels, support 720P 30 fps video output smoothly3. GC02M2 high-definition light-sensitive chip, stable performance, high sensitivity, low power consumption4. Applicable scope: UAV aerial photography, visual doorbell, self-service terminal, face recognition, mobile payment, security monitoring, video conferencing, parking applications, drones, advertising integrated machine, etc.5. Pixel: 2 million pixels (1600×1200)6. Light-sensitive chip: GC02M2 (1/5 inch) CMOS7. Format: YUV422, MJPG, YUV8. Frame rate: 30 fps HD720p9. Interface: USB2.0 driver-free, plug-and-play10. System compatibility: Windows, Android, Linux11. Size: about 2.9 x 1.15cm

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1. Can be applied to various fields of products, such as intelligent consumer, security monitoring, industrial monitoring, etc.2. HD 720P, 1 million pixels, support 720P 30fps video smooth output3. GC1064 HD sensor chip, stable performance, high sensitivity, low power consumption4. Scope of application: smart home, mobile payment, visual doorbell, security monitoring, video conferencing, sports camera, car recorder, drone, advertising machine, etc.5. Pixel: 1 million pixels (1280x720)6. Light-sensitive chip: GC1064 (1/4 inch) CMOS7. Format: MJPG, YUV, H.2648. Frame rate: 720p: 30 fps9. Interface: USB2.0 driver-free, plug-and-play10. Field of view/focal length: 70 degrees/3.0mm, 160 degrees/1.7mm11. Size: about 38 x 38mm

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1. 2 megapixel, UXGA (1632x1232), support dynamic, with JPEG picture compression2. Can be used for cell phones, map transfer, PC multimedia, toys, digital cameras, scanning and other devices3. Low light operation, high sensitivity, embedded portable applications, low operating voltage4. Body material: FPC5. Pixels: 2 megapixels (1632x1232)6. Light-sensitive chip: OV2640 (1/4 inch) CMOS7. Output format: YUV(422/420)/YCbcr422, RGB565/555, 8-bit compressed data, 8/10-bit original RGB data8. Frame rate: UXGA/SXGA: 15fps; SVGA: 30 fps; CIF: 60 fps9. Interface: DVP10. System support: Android, Windows, Linux11. Size: about 21 x 9 x 7.2mm

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1. Suitable for intelligent identification system, smart home, visual doorbell, sports camera, drone products and other areas that require image acquisition2. HD 5 megapixel, support 5MP (2592x1944) 30fps video output smoothly3. IMX335 high-definition sensor chip, stable performance, high sensitivity, low power consumption, low illumination4. Scope of application: UAV aerial photography, visual doorbell, self-service terminals, face recognition, mobile payment, security monitoring, video conferencing, parking applications, drones, advertising machines, medical equipment, etc.5. Pixel: 5 million pixels (2592x1944)6. Light-sensitive chip: IMX335 (1/2.8 inch) CMOS7. Format: MJPG, YUV4228. Frame rate: 2592(H)x1944(V): 30 fps9. Interface: USB driver-free, plug-and-play10. Material: PCB11. Size: about 38 x 38mm

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1. Autofocus, to achieve automatic fast and accurate focus, easy to shoot effect2. Can be applied to smart home, cell phones, digital cameras, PC multimedia, identification devices, etc.3. 500W pixel, support 1080P, accurately capture the details of highlights and shadows in the scene, vivid and clear picture4. Body material: FPC5. Pixels: 5 megapixels (2592x1944)6. Light-sensitive chip: OV5640 (1/4 inch) CMOS7. Output format: 8 /10 bit RGB RAW output8. Frame rate: QSXGA (2592x1944): 15fps; 1280x960: 45 fps; 720p: 60 fps; VGA (640x480): 90 fps; QVGA (320x240): 120 fps9. Interface: DVP/MIPI10. Lens main ray angle: 24 degrees11. Size: about 21 x 8.5 x 5mm

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1. Wide range of operating voltages 2. Full patch process 3. Power supply reversal protection 4. Dual audio output terminals 5. External antenna available (for installation inside metal boxes) 6. LED indicator 7. Fast flashing: waiting for connection 8. Slow flashing: audio playing 9. Always on: Connected 10. Operating temperature: -40 to 85 degrees Celsius 11. Bluetooth module: V1.2 12. Bluetooth name: LQSC_BT 13. Bluetooth version: 4.2 14. Power supply voltage: DC5V-35V 15. Chip: Low noise LDO chip 16. External dimensions: 55x32x9mm, combinable 17. Net weight: 7g Shipping list -1 x mp3 Bluetooth decoder board -1 x 2.54mm 3P audio shielded cable -1 x 2.54mm 3P socket terminal

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1. Pure black and gold plated circuit board, imported KEMET audio capacitors, high capacity filter capacitors per channel. Special order pure black copper terminals, gold plated audio input terminals2. Protection: power input reversal protection, short circuit, overheating, over EMI3. Low quiescent current, noise suppression4. External amplifier type selection function (MODE: high level class D, low level class AB, factory default high level)5. External shutdown (SD: chip shutdown at low level, factory default high level)6. External mute (MUTE: low level mute, factory default high level)8. Input method: Single-ended9. Output power: 5W 2 ohms 5V; 3W 4 ohms 5V; 1.8W 8 ohms 5V10. Size: 55.12 x 32.26mm11. Weight: 25g

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1. Gold-sunk wiring for better sound 2. Optimized ground wiring to eliminate bottom noise 3. Immersion gold circuit board, car-grade amplifier chip, Nichicon professional audio filter capacitors 4. Input mode: 3.5mm audio cable input or 3P 2.54mm terminal input 5. Can be connected to 2/4/6/8 ohm speakers 6. Protection function: reverse power input protection, short circuit protection, over-current protection, overheat protection 7. Supply voltage: DC12-18V 8. Output power: 2x80W stereo (18V / 4 ohms) and 1x120W pure bass (18V / 2 ohms) 9. Potentiometer knob opening: 7mm 10. Mounting hole spacing: 25.4x48.26mm (Bluetooth module spacing compatible) 11. PCB size: 72.36 x 66.65mm 12. Overall (including heat sink):: 72.36 x 96 x 27mm 13. Weight: 170g

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1. Use NE5532 chip, can replace OP275, AD828, NJM4558, TL072 and other general-purpose dual op-amps2. Low quiescent current and noise suppression 3. Bass: 100HZ/80DB gain adjustment4. Tweeter: 10KHZ/80DB gain adjustment5. Frequency response: 20-20000HZ6. Signal to noise ratio: 98dB7. Supply voltage: DC9-24V (5 x 2.1mm core input, 2P chassis input)8. Rated power 2x770mW stereo (24V/32 ohms) can be connected to loads above 32 ohms9. Output method: 3.5mm audio jack10. Input method: 3.5mm audio terminal, 3P 2.54mm terminal block, 6P 2.5mm chassis11. PCB: 72x53mm12. Overall: 72x53x15mm13. Potentiometer knob opening: 7mm14. Distance between mounting holes: 47.58x36mm15. Net weight: 54g

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1. Wide range of operating voltages2. Full chip process3. Reverse power supply protection4. Dual audio output terminals (3.5mm and 2.54mm 3P)5. Dual AUX input terminals (3.5mm and 2.54mm 3P)6. External antenna available (suitable for installation inside a metal box)7. Short body headless 3.5mm audio jack8. LED indicator description9. Flashing: waiting for connection10. Slow flashing: audio playback in progress11. Always on: Connected12. Bluetooth name: LQSC_BT13. Bluetooth version: 4.214. Bluetooth module: V1.215. Input voltage: DC5V-12V 16.16. Operating temperature: -40 to 85 degrees Celsius17. Chip: Low noise LDO chip18. Decoding format: AAC/FLAC/APE/WMA/WAV19. External dimensions: 55x32x9mm, combinable20. Net weight: 20gUsage1. This module is a Bluetooth receiver module, output standard analogue audio signal2. Also add AUX input terminal, convenient to connect other audio sources3. When Bluetooth is not connected, the AUX terminal and OUT terminal are directly connected4. When Bluetooth is connected, the Bluetooth audio signal is output from the OUT terminal, and the AUX terminal and OUT terminal are disconnectedShipping list-1 x mp3 Bluetooth decoder board-1 x 2.54mm 3P audio shielded cable-1 x 2.54mm 3P socket terminal

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1. Speaker impedance: 4-8 ohms 2. Speaker power: 10-50W 3. Input current: 3A 4. Input voltage: 9-24V 5. Function: Support Wuzhi Audio App 6. Audio input: BT+AUX+USB+USB sound card 7. Power output: 30W+30W 8. Number of channels: 2.0 9. Protection mechanism: overcurrent, overheating, short circuit, anti-static protection 10. Dimensions: 76 x 50 x 18mm 11. Weight: about 82G 12. Note: 24V battery cannot be used for power supply, because the full voltage of the battery will be around 28V

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1. Has high and low tones 2. Speaker power: 5-30W 3. Speaker impedance: 4-8 ohms 4. Input voltage: 9-24V 5. Input current: 2A 6. Audio input: BT+AUX+USB+USB sound card 7. Power output: 15W+15W 8. Number of channels: 2.0 9. Protection mechanism: overcurrent, overheating, short circuit, anti-static protection 10. Function: Support Wuzhi Audio App 11. Dimensions: 71 x 60 x 22mm 12. Weight: about 98G 13. Note: 24V batteries cannot be used for power supply, because the full voltage of the battery will be around 28V

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1. Has high and low tones 2. Speaker power: 10-50W 3. Speaker impedance: 4-8 ohms 4. Input voltage: 9-24V 5. Input current: 3A 6. Audio input: BT+AUX+USB+USB sound card 7. Power output: 30W+30W 8. Number of channels: 2.0 9. Protection mechanism: overcurrent, overheating, short circuit, anti-static protection 10. Function: Support Wuzhi Audio App 11. Dimensions: 71 x 50 x 20mm 12. Weight: about 106G 13. Note: 24V batteries cannot be used for power supply, because the full voltage of the battery will be around 28V

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1. Speaker impedance: 4-8 ohms 2. Speaker power: 5-30W 3. Input current: 2A 4. Input voltage: 9-24V 5. Function: Support Wuzhi Audio App 6. Audio input: BT+AUX+USB+USB sound card 7. Power output: 15W+15W 8. Number of channels: 2.0 9. Protection mechanism: overcurrent, overheating, short circuit, anti-static protection 10. Dimensions: 71 x 50 x 20mm 11. Weight: about 76G 12. Note: 24V battery cannot be used for power supply, because the full voltage of the battery will be around 28V

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1. Mounting size: 22mm 2. Color: Black + red 3. PBT material 4. Insulation resistance: > / = 2M ohms 5. Permitted Voltage: + / - 20% (AC 220V) 6. Brightness: > / = 100cd/m2 7. Electrical Life: 30000 hours 8. Dielectric Strength: 2.5KV (AC RMS) 9. CTI: > / = 100 10. Protection grade: IP65 11. Operating frequency: AC 50~60Hz 12. Dimensions: 5.0 x 3.6 x 3.6cm 13. Weight: 18g

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1. Mounting size: 22mm 2. Color: Black + red 3. PBT material 4. Insulation resistance: > / = 2M ohms 5. Permitted Voltage: + / - 20% (AC 24V) 6. Brightness: > / = 100cd/m2 7. Electrical Life: 30000 hours 8. Dielectric Strength: 2.5KV (AC RMS) 9. CTI: > / = 100 10. Protection grade: IP65 11. Operating frequency: AC 50~60Hz 12. Dimensions: 5.0 x 3.6 x 3.6cm 13. Weight: 18g

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1. Mounting size: 22mm 2. Color: Black + red 3. PBT material 4. Insulation resistance: > / = 2M ohms 5. Permitted Voltage: + / - 20% (AC 12V) 6. Brightness: > / = 100cd/m2 7. Electrical Life: 30000 hours 8. Dielectric Strength: 2.5KV (AC RMS) 9. CTI: > / = 100 10. Protection grade: IP65 11. Operating frequency: AC 50~60Hz 12. Dimensions: 5.0 x 3.6 x 3.6cm 13. Weight: 18g

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1. Mounting size: 22mm 2. Color: Black + red 3. PBT material 4. Insulation resistance: > / = 2M ohms 5. Permitted Voltage: + / - 20% (AC 24V) 6. Brightness: > / = 100cd/m2 7. Electrical Life: 30000 hours 8. Dielectric Strength: 2.5KV (AC RMS) 9. CTI: > / = 100 10. Protection grade: IP65 11. Operating frequency: AC 50~60Hz 12. Dimensions: 5.0 x 3.6 x 3.6cm 13. Weight: 18g

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1. Mounting size: 22mm 2. Color: Black + red 3. PBT material 4. Insulation resistance: > / = 2M ohms 5. Permitted Voltage: + / - 20% (AC 24V) 6. Brightness: > / = 100cd/m2 7. Electrical Life: 30000 hours 8. Dielectric Strength: 2.5KV (AC RMS) 9. CTI: > / = 100 10. Protection grade: IP65 11. Operating frequency: AC 50~60Hz 12. Dimensions: 5.0 x 3.6 x 3.6cm 13. Weight: 18g

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1. Mounting size: 22mm 2. Color: Black + red 3. PBT material 4. Insulation resistance: > / = 2M ohms 5. Permitted Voltage: + / - 20% (AC 12V) 6. Brightness: > / = 100cd/m2 7. Electrical Life: 30000 hours 8. Dielectric Strength: 2.5KV (AC RMS) 9. CTI: > / = 100 10. Protection grade: IP65 11. Operating frequency: AC 50~60Hz 12. Dimensions: 5.0 x 3.6 x 3.6cm 13. Weight: 18g

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1. Mounting size: 22mm 2. Color: Black + red 3. PBT material 4. Insulation resistance: > / = 2M ohms 5. Permitted Voltage: + / - 20% (AC 24V) 6. Brightness: > / = 100cd/m2 7. Electrical Life: 30000 hours 8. Dielectric Strength: 2.5KV (AC RMS) 9. CTI: > / = 100 10. Protection grade: IP65 11. Operating frequency: AC 50~60Hz 12. Dimensions: 5.0 x 3.6 x 3.6cm 13. Weight: 18g

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1. Mounting size: 22mm 2. Color: Black + red 3. PBT material 4. Insulation resistance: > / = 2M ohms 5. Permitted Voltage: + / - 20% (AC 12V) 6. Brightness: > / = 100cd/m2 7. Electrical Life: 30000 hours 8. Dielectric Strength: 2.5KV (AC RMS) 9. CTI: > / = 100 10. Protection grade: IP65 11. Operating frequency: AC 50~60Hz 12. Dimensions: 5.0 x 3.6 x 3.6cm 13. Weight: 18g

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1. Mounting size: 22mm 2. Color: Black + red 3. PBT material 4. Insulation resistance: > / = 2M ohms 5. Permitted Voltage: + / - 20% (AC 24V) 6. Brightness: > / = 100cd/m2 7. Electrical Life: 30000 hours 8. Dielectric Strength: 2.5KV (AC RMS) 9. CTI: > / = 100 10. Protection grade: IP65 11. Operating frequency: AC 50~60Hz 12. Dimensions: 5.0 x 3.6 x 3.6cm 13. Weight: 18g

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1. Mounting size: 22mm 2. Color: Black + red 3. PBT material 4. Insulation resistance: > / = 2M ohms 5. Permitted Voltage: + / - 20% (AC 220V) 6. Brightness: > / = 100cd/m2 7. Electrical Life: 30000 hours 8. Dielectric Strength: 2.5KV (AC RMS) 9. CTI: > / = 100 10. Protection grade: IP65 11. Operating frequency: AC 50~60Hz 12. Dimensions: 5.0 x 3.6 x 3.6cm 13. Weight: 18g

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1. Mounting size: 22mm 2. Color: Black + red 3. PBT material 4. Insulation resistance: > / = 2M ohms 5. Permitted Voltage: + / - 20% (AC 12V) 6. Brightness: > / = 100cd/m2 7. Electrical Life: 30000 hours 8. Dielectric Strength: 2.5KV (AC RMS) 9. CTI: > / = 100 10. Protection grade: IP65 11. Operating frequency: AC 50~60Hz 12. Dimensions: 5.0 x 3.6 x 3.6cm 13. Weight: 18g

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1. Mounting size: 22mm 2. Color: Black + red 3. PBT material 4. Insulation resistance: > / = 2M ohms 5. Permitted Voltage: + / - 20% (AC 12V) 6. Brightness: > / = 100cd/m2 7. Electrical Life: 30000 hours 8. Dielectric Strength: 2.5KV (AC RMS) 9. CTI: > / = 100 10. Protection grade: IP65 11. Operating frequency: AC 50~60Hz 12. Dimensions: 5.0 x 3.6 x 3.6cm 13. Weight: 18g

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