Bestselling Products

1. Application scope: for stage speakers or home speakers high school bass DIY2. Filtering characteristics: high middle and low three frequency3. Frequency Response: 40Hz-20KHz4. Power: 300W5. Impedance: 4-8 ohms6. Applicable speakers: A models: 3 inch; B models: 4 inch; C models: 3-5 inch7. 66mm large skeleton inductor, so that the low-frequency signal through the rapid, reduce heat, show frequency response8. Frequency point adjustable, no welding line design, easier to install and use9. Appearance size: 151 x 135mm10. Center hole distance: 143 x 127mmSpecification: Package Weight One Package Weight 0.38kgs / 0.85lb One Package Size 17cm * 15cm * 6cm / 6.69inch * 5.91inch * 2.36inch Qty per Carton 30 Carton Weight 13.00kgs / 28.66lb Carton Size 50cm * 36cm * 32cm / 19.69inch * 14.17inch * 12.6inch Loading Container 20GP: 462 cartons * 30 pcs = 13860 pcs 40HQ: 1074 cartons * 30 pcs = 32220 pcs

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1. For: bookshelf speakers2. Filter characteristics: a high and low3. Power: 200W4. Impedance: 4-8 ohm5. Frequency point 2830Hz6. Capacitor optimizes the sound quality, maintains circuit stability and improves crossover performance7. High-temperature inductors to bring powerful and deeper bass effect8. Solder-free terminals for easy installation at any time9. Size: 100 x 62 x 34mm10. Weight: about 139gSpecification: Package Weight One Package Weight 0.18kgs / 0.41lb One Package Size 11cm * 8cm * 5cm / 4.33inch * 3.15inch * 1.97inch Qty per Carton 120 Carton Weight 23.00kgs / 50.71lb Carton Size 50cm * 37cm * 35cm / 19.69inch * 14.57inch * 13.78inch Loading Container 20GP: 411 cartons * 120 pcs = 49320 pcs 40HQ: 956 cartons * 120 pcs = 114720 pcs

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1. Applicable: home theater high school and low three-way speaker modification upgrade2. Filter: 1 high, 1 medium, 1 low3. Power: 350W4. Impedance: 4-8 ohm5. Frequency point: 900Hz, 3750Hz6. Circuit: 12db/oct7. High frequency part is clear and recognizable, the bass is strong and powerful8. Inductors are fixed with double ties to prevent music resonance9. The use of solder-free terminals, more convenient and faster10. Size: 120 x 90 x 33mm11. Weight: 240gSpecification: Package Weight One Package Weight 0.25kgs / 0.56lb One Package Size 13cm * 10cm * 5cm / 5.12inch * 3.94inch * 1.97inch Qty per Carton 70 Carton Weight 19.00kgs / 41.89lb Carton Size 51cm * 37cm * 28cm / 20.08inch * 14.57inch * 11.02inch Loading Container 20GP: 504 cartons * 70 pcs = 35280 pcs 40HQ: 1171 cartons * 70 pcs = 81970 pcs

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1. Applicable: home theater speakers DIY modification upgrade2. Filter: 1 high, 1 medium, 2 low3. Power: 250W4. Frequency point: bass-midrange 780Hz/tweeter-midrange 5000Hz5. Impedance: 4-8 ohm6. 3 large 41mm frames, fixed with ties to prevent resonance7. Non-soldering terminals, more convenient wiring8. Size: 115 x 78mm9. Weight: 146gSpecification: Package Weight One Package Weight 0.16kgs / 0.36lb One Package Size 13cm * 9cm * 4cm / 5.12inch * 3.54inch * 1.57inch Qty per Carton 90 Carton Weight 16.00kgs / 35.27lb Carton Size 50cm * 38cm * 28cm / 19.69inch * 14.96inch * 11.02inch Loading Container 20GP: 501 cartons * 90 pcs = 45090 pcs 40HQ: 1163 cartons * 90 pcs = 104670 pcs

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1. Application: stage speaker modification and upgrading2. Filter characteristics: 1 high, 1 low3. Crossover point: 3200Hz4. Power: 400W5. Impedance: 4-8 ohms6. 1.0mm wire diameter and 66mm length high-temperature inductor for treble and 1.0mm wire diameter and 66mm length air core inductor for bass, good heat dissipation7. High-frequency ceramic cement resistors with high heat, humidity and corrosion-resistant chip feet8. Size: 144 x 94mm9. Weight: 236gSpecification: Package Weight One Package Weight 0.25kgs / 0.56lb One Package Size 16cm * 11cm * 4cm / 6.3inch * 4.33inch * 1.57inch Qty per Carton 80 Carton Weight 22.00kgs / 48.50lb Carton Size 50cm * 38cm * 35cm / 19.69inch * 14.96inch * 13.78inch Loading Container 20GP: 401 cartons * 80 pcs = 32080 pcs 40HQ: 930 cartons * 80 pcs = 74400 pcs

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1. Application scope: for stage speakers or home speakers high school bass DIY2. Filter characteristics: high, medium, low three-way frequency crossover3. Frequency response: 40Hz-22KHz4. Power: 350W5. Impedance: 4-8 ohms6. Fireproof plate, high-temperature conductive well7. No welding wire terminals, easy to install and use8. Crossover point: bass / midrange 900Hz (midrange small voice) / 850Hz / 780Hz (midrange loud) switch adjustable; treble / midrange 2 ways; 5500/5800Hz switch adjustable9. Appearance size: 156 x 135mm10. Center hole distance: 148 x 127mmSpecification: Package Weight One Package Weight 0.56kgs / 1.24lb One Package Size 17cm * 15cm * 6cm / 6.69inch * 5.91inch * 2.36inch Qty per Carton 30 Carton Weight 18.00kgs / 39.68lb Carton Size 50cm * 36cm * 32cm / 19.69inch * 14.17inch * 12.6inch Loading Container 20GP: 462 cartons * 30 pcs = 13860 pcs 40HQ: 1074 cartons * 30 pcs = 32220 pcs

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1. Scope of application: for home speakers high and low two-way DIY modification2. Power: 100W3. Frequency response: 45hz-20khz4. Applicable impedance: 4-8 ohm5. For speakers: 8 inch below6. MKP metal film capacitors, powerful bass, clear treble7. Six solderless terminals, easy to install and use8. Size: 98 x 65mm9. Weight: about 120.6gSpecification: Package Weight One Package Weight 0.15kgs / 0.34lb One Package Size 12cm * 8cm * 5cm / 4.72inch * 3.15inch * 1.97inch Qty per Carton 120 Carton Weight 20.00kgs / 44.09lb Carton Size 51cm * 38cm * 34cm / 20.08inch * 14.96inch * 13.39inch Loading Container 20GP: 404 cartons * 120 pcs = 48480 pcs 40HQ: 939 cartons * 120 pcs = 112680 pcs

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1. Application: home, stage, car tweeter DIY2. Power: 40W3. Applicable impedance: 4-6 ohms4. Applicable speakers: all tweeters5. PCB board is made of fireproof board, with large soldering point and thick copper layer, which makes the board more durable6. Installation instructions: lead black and red is the input (IN); blue and black is the output (connected to the tweeter)7. Size: 50 x 25mm8. Weight: 30gSpecification: Package Weight One Package Weight 0.05kgs / 0.12lb One Package Size 6cm * 4cm * 4cm / 2.36inch * 1.57inch * 1.57inch Qty per Carton 360 Carton Weight 19.00kgs / 41.89lb Carton Size 32cm * 38cm * 34cm / 12.6inch * 14.96inch * 13.39inch Loading Container 20GP: 644 cartons * 360 pcs = 231840 pcs 40HQ: 1497 cartons * 360 pcs = 538920 pcs

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1. Scope of application: for home speakers high-low two-way DIY modification2. Power: 80W3. Frequency response: low 55KHz; high: 30KHz4. Impedance: 4-8 ohm5. Applicable speakers: below 6 inches6. The back of PCB board is clean, reasonable layout, large soldering points7. Rounded corners, good circuit conductivity8. The treble channel adopts three-step design, with treble 3db adjustable switch9. Using two inductors staggered 90 degrees to cut off the coupling path, as far as possible to restore the sound details10. Size: 86 x 63mm11. Center hole spacing: 76 x 53mmSpecification: Package Weight One Package Weight 0.14kgs / 0.32lb One Package Size 11cm * 8cm * 5cm / 4.33inch * 3.15inch * 1.97inch Qty per Carton 120 Carton Weight 18.00kgs / 39.68lb Carton Size 50cm * 37cm * 35cm / 19.69inch * 14.57inch * 13.78inch Loading Container 20GP: 411 cartons * 120 pcs = 49320 pcs 40HQ: 956 cartons * 120 pcs = 114720 pcs

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1. Applicable: home theater speakers DIY modification upgrade2. Filter: 2 high, 1 medium, 1 low (four-way)3. Power: 200W4. Frequency point: bass / midrange 780Hz; tweeter / midrange 5200Hz5. Impedance: 4-8 ohms6. Adopting solderless terminals, more convenient and quicker wiring7. 41mm large inductance, high-temperature resistant copper-clad aluminum wire winding8. Size: 115 x 80 x 25mm9. Weight: 137gSpecification: Package Weight One Package Weight 0.15kgs / 0.34lb One Package Size 13cm * 9cm * 4cm / 5.12inch * 3.54inch * 1.57inch Qty per Carton 90 Carton Weight 14.00kgs / 30.86lb Carton Size 50cm * 38cm * 28cm / 19.69inch * 14.96inch * 11.02inch Loading Container 20GP: 501 cartons * 90 pcs = 45090 pcs 40HQ: 1163 cartons * 90 pcs = 104670 pcs

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1. Applicable: home theater speakers DIY modification upgrade2. Filter: 1 high, 1 medium, 2 low3. Power: 400W4. Frequency point: bass-midrange 750Hz/treble-midrange 5200Hz5. Impedance: 4-8 ohm6. Non-soldering terminals, more convenient and quicker wiring7. 66mm large inductor + anti-vibration feet to prevent music resonance8. High capacitance insulation, low dielectric loss, good stability9. Size: 150 x 100mmSpecification: Package Weight One Package Weight 0.45kgs / 1.00lb One Package Size 17cm * 12cm * 5cm / 6.69inch * 4.72inch * 1.97inch Qty per Carton 60 Carton Weight 29.00kgs / 63.93lb Carton Size 51cm * 38cm * 35cm / 20.08inch * 14.96inch * 13.78inch Loading Container 20GP: 393 cartons * 60 pcs = 23580 pcs 40HQ: 912 cartons * 60 pcs = 54720 pcs

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1. Suitable for speakers: below 8 inches2. Ohm: 4-8 ohm3. Adjustable switch, adjustable for trap frequency and cut amount4. 4-position non-soldering terminal, more convenient and quicker wiring5. Function is to cut and trim the middle and high frequencies to meet the requirements of the overall curve flatter6. 66mm high temperature resistant inductor, and fixed with a tie to prevent music resonance7. MKP audio capacitors, small loss, clear sound quality8. Size: 98 x 60mm9. Weight: about 195gSpecification: Package Weight One Package Weight 0.21kgs / 0.47lb One Package Size 12cm * 8cm * 5cm / 4.72inch * 3.15inch * 1.97inch Qty per Carton 120 Carton Weight 27.00kgs / 59.52lb Carton Size 51cm * 38cm * 34cm / 20.08inch * 14.96inch * 13.39inch Loading Container 20GP: 404 cartons * 120 pcs = 48480 pcs 40HQ: 939 cartons * 120 pcs = 112680 pcs

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1. Application: car audio modification2. Power: 120W3. Frequency response: low: 45Hz; high: 20KHz4. Applicable impedance: 2/4/6 ohm5. Bass inductor + polymer magnets, enhance the sinking degree of the bass6. Double infusion heat dissipation ABS plastic shell, beautiful and generous7. 6-position solder-free plug, easy to use8. Size: 120 x 65 x 33mm9. Weight: about 154gSpecification: Package Weight One Package Weight 0.20kgs / 0.45lb One Package Size 15cm * 8cm * 5cm / 5.91inch * 3.15inch * 1.97inch Qty per Carton 70 Carton Weight 16.00kgs / 35.27lb Carton Size 50cm * 37cm * 32cm / 19.69inch * 14.57inch * 12.6inch Loading Container 20GP: 450 cartons * 70 pcs = 31500 pcs 40HQ: 1045 cartons * 70 pcs = 73150 pcs

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1. Suitable for: bass audio modification2. Power: 220W3. Applicable impedance: 4-8 ohms4. Frequency point: 500Hz/550Hz (adjustable)5. Filter: pure bass crossover frequency6. Bass adjustment switch, fluctuation switch to adjust the different bass effects7. More audio capacitors in parallel, filter out most of the mid-range and high frequency8. High-temperature copper-clad aluminum wire winding, durability, to provide long-lasting performance and stable audio output9. Size: 103 x 72 x 35mm10. Weight: about 140gSpecification: Package Weight One Package Weight 0.18kgs / 0.41lb One Package Size 12cm * 9cm * 5cm / 4.72inch * 3.54inch * 1.97inch Qty per Carton 90 Carton Weight 18.00kgs / 39.68lb Carton Size 47cm * 38cm * 32cm / 18.5inch * 14.96inch * 12.6inch Loading Container 20GP: 466 cartons * 90 pcs = 41940 pcs 40HQ: 1083 cartons * 90 pcs = 97470 pcs

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1. Application: speaker tweeter DIY2. Power: 80W3. Frequency response: 48Hz-20KHz4. Applicable impedance: 4-8 ohms5. Through the toggle treble adjustable switch, reach about 2800Hz-3200Hz adjustable6. Fireproof board made of PCB board, stronger carrying capacity, thick copper layer, better conductivity7. Size: 68 x 45mmSpecification: Package Weight One Package Weight 0.11kgs / 0.25lb One Package Size 10cm * 6cm * 4cm / 3.94inch * 2.36inch * 1.57inch Qty per Carton 200 Carton Weight 24.00kgs / 52.91lb Carton Size 50cm * 38cm * 32cm / 19.69inch * 14.96inch * 12.6inch Loading Container 20GP: 438 cartons * 200 pcs = 87600 pcs 40HQ: 1018 cartons * 200 pcs = 203600 pcs

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1. The module is a high quality MP3 music chip based on MP3 music player module, support for sampling rate is 8KHz ~ 48KHz MP3, WAV format files2. Micro SD card holder on board, can be inserted into the micro SD card stored music files; microcontroller can send commands through the serial port to switch the music, adjust the volume, play mode and other operations3. Users can also be debugged through the USB to serial module on the module; module and UNO/AVR/ARM/PIC and other microcontroller system compatibleModule features:1. Support sample rate (KHz): 8/11.025/12/16/22.05/2432/44.1/482. Support file format: MP3 / WAV3. Support Micro SD card, Micro SDHC card SUNLEPHANT4. 30 levels of adjustable volume5. UART TTL serial port control playback mode, serial port baud rate of 9600bps6. Power supply can be 3.2 ~ 5.2VDCSpecification: Package Weight One Package Weight 0.02kgs / 0.04lb One Package Size 10cm * 6cm * 2cm / 3.94inch * 2.36inch * 0.79inch Qty per Carton 180 Carton Weight 3.80kgs / 8.38lb Carton Size 50cm * 32cm * 32cm / 19.69inch * 12.6inch * 12.6inch Loading Container 20GP: 520 cartons * 180 pcs = 93600 pcs 40HQ: 1209 cartons * 180 pcs = 217620 pcs

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1. Application: bookshelf speakers 1 high 1 low two-way DIY modification upgrade2. Power: 250W3. Filter: 1 high, 1 low4. Frequency point: 2600-3100Hz5. Adjustable impedance: 4-8 ohms6. 41mm high-temperature resistant inductor, and fixed with a tie to prevent music resonance7. High/bass independent frequency adjustable switch, multi-band frequency adjustable to meet different needs, applicable to more speakers8. Solder-free terminals, easy to install and use9. Dimensions: 112 x 62 x 26mm10. Weight: about 161gSpecification: Package Weight One Package Weight 0.19kgs / 0.43lb One Package Size 14cm * 8cm * 4cm / 5.51inch * 3.15inch * 1.57inch Qty per Carton 100 Carton Weight 21.00kgs / 46.30lb Carton Size 44cm * 38cm * 34cm / 17.32inch * 14.96inch * 13.39inch Loading Container 20GP: 469 cartons * 100 pcs = 46900 pcs 40HQ: 1088 cartons * 100 pcs = 108800 pcs

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1. Filter characteristics: pure midrange crossover2. Frequency Point: 750~2000Hz3. Power: 120W4. Impedance: 4-8 ohm5. Solderless terminals, easy to install and use6. 1.0 large wire frame, high-temperature resistant, copper-clad aluminum enameled wire inductors7. MKP capacitors, low loss of high frequency response, clear sound quality8. Size: 100 x 54 x 28mmSpecification: Package Weight One Package Weight 0.17kgs / 0.38lb One Package Size 12cm * 7cm * 4cm / 4.72inch * 2.76inch * 1.57inch Qty per Carton 160 Carton Weight 29.00kgs / 63.93lb Carton Size 50cm * 37cm * 34cm / 19.69inch * 14.57inch * 13.39inch Loading Container 20GP: 423 cartons * 160 pcs = 67680 pcs 40HQ: 984 cartons * 160 pcs = 157440 pcs

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1. Filter: 2 high, 1 medium, 1 low2. Power: 250W3. Frequency point: mid-treble 5800-6000Hz adjustable / mid-bass 600-750Hz adjustable4. Impedance: 4-16 ohms5. Solder-free terminal, more convenient and quicker wiring6. Soprano/midrange independent frequency adjustable switch, to meet your different needs, can be adapted to more speakers7. Dimension: 133 x 105 x 35mm8. Weight: 313gSpecification: Package Weight One Package Weight 0.35kgs / 0.78lb One Package Size 16cm * 12cm * 5cm / 6.3inch * 4.72inch * 1.97inch Qty per Carton 50 Carton Weight 19.00kgs / 41.89lb Carton Size 50cm * 38cm * 32cm / 19.69inch * 14.96inch * 12.6inch Loading Container 20GP: 438 cartons * 50 pcs = 21900 pcs 40HQ: 1018 cartons * 50 pcs = 50900 pcs

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1. Powerful function: VS1053 module, in addition to playing a variety of music formats, but also supports OGG real-time encoding recording2. SPI interface: the module adopts SPI interface, all control signal lines are led out, which can be easily and flexibly integrated into different projects3. Multiple audio interfaces: a headphone and speaker output, a microphone input for recording, and a line input, providing a variety of audio connection options, the module also includes a LED power indicator for easy monitoring4. On-board power supply: the development board is equipped with the AMS-1117 LDO chip, providing 3.3V and 2.5V outputs and up to 800mA of current5. Single power supply: the module is powered by a single +5VDC power supply, and capacitive filtering technology is used in the design to improve stability; the 12.288MHz crystal oscillator further improves the modules precision and accuracy6. Weight: about 16.8gSpecification: Package Weight One Package Weight 0.03kgs / 0.07lb One Package Size 10cm * 10cm * 2cm / 3.94inch * 3.94inch * 0.79inch Qty per Carton 360 Carton Weight 7.30kgs / 16.09lb Carton Size 50cm * 34cm * 32cm / 19.69inch * 13.39inch * 12.6inch Loading Container 20GP: 490 cartons * 360 pcs = 176400 pcs 40HQ: 1137 cartons * 360 pcs = 409320 pcs

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1. The product can work on DC power between 7V-12V, with good sound quality and no interference, the effective distance of Bluetooth is 20M in open space, if there are walls or other obstacles blocking the transmission distance will be discounted2. The decoder board supports U disk TF card direct playback, FM radio, lossless WAV format, MP3 format and WMA format3. It comes with Bluetooth audio receiver module, after the cell phone and Bluetooth module are paired and connected, the audio played by the cell phone will be transmitted to the decoder board via Bluetooth, and the cell phone playback/previous/next song operation can be controlled by the Bluetooth function of the decoder board4. The product does not come with amplifier output, can not be directly connected to the speaker, can be connected to other high-power amplifier output5. Weight: about 31.8gFeatures:-Support direct switching of external signals-Support Bluetooth3.0EDR-Support USB/SD/Bluetooth/FM/LINE automatic switching-Module contains MP3/WMA/WAV song decoding chip-Support USB, TF card for playback-Support USB/TF card switching, previous song, next song, fast forward, fast backward, volume adjustment, EQ, play/pause, stop, single repeat, mute, shutdown, direct song selection-Support Bluetoot previous song, next song, volume, EQ, play/pause, mute, shutdown-Support FAT16 and FAT32 file system-Support MP1 Layer3, MP2Layer3, MP3 Layer3 version of the song-Support 32-320kbps MP3 songs-Support power failure memory function: memorize the songs and volume played before power failureSpecification: Package Weight One Package Weight 0.04kgs / 0.10lb One Package Size 14cm * 7cm * 4cm / 5.51inch * 2.76inch * 1.57inch Qty per Carton 120 Carton Weight 5.00kgs / 11.02lb Carton Size 50cm * 37cm * 30cm / 19.69inch * 14.57inch * 11.81inch Loading Container 20GP: 480 cartons * 120 pcs = 57600 pcs 40HQ: 1115 cartons * 120 pcs = 133800 pcs

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-Audio input method:1. Bluetooth reception 2. USB decoding playback 3. TF card decoding playback-Support playback format: MP3, WMA, WAV, FLAC, APE (only support APE FAST encoding format)-Power supply: 5VDC (original cell phone charger can power small USB plug)-Preamp output: can directly promote headphones, can also be connected to the rear amplifier useSpecification: Package Weight One Package Weight 0.02kgs / 0.04lb One Package Size 8cm * 6cm * 2cm / 3.15inch * 2.36inch * 0.79inch Qty per Carton 960 Carton Weight 11.70kgs / 25.79lb Carton Size 50cm * 34cm * 32cm / 19.69inch * 13.39inch * 12.6inch Loading Container 20GP: 490 cartons * 960 pcs = 470400 pcs 40HQ: 1137 cartons * 960 pcs = 1091520 pcs

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1. Long-range transmission, Bluetooth 5.0 backward compatible, lossless sound quality2. BT5.0 Audio PRO continues the excellent basic functions of BT5.0 Audio3. Add more humanized performance, easy to use4. Size: about 3.8 x 3.6cm5. Note: delivery of only the module, does not contain otherInstructions for buttons:1. ON/OFF: Bluetooth power on/off2. BACK/V: previous song/volume down3. NEXT/V+: next song/volume up4. PLAY/STOP: play/pause, answer/hang up5. Micro USB power supply6. Lithium battery power supply (please do not reverse)7. 3.5mm headphone jack8. Microphone9. MUTE output10. Charging status indicator (red)11. Battery indicator (yellow)12. Bluetooth indicator (blue)Specification: Package Weight One Package Weight 0.01kgs / 0.03lb One Package Size 6cm * 5cm * 2cm / 2.36inch * 1.97inch * 0.79inch Qty per Carton 720 Carton Weight 8.30kgs / 18.30lb Carton Size 50cm * 32cm * 32cm / 19.69inch * 12.6inch * 12.6inch Loading Container 20GP: 520 cartons * 720 pcs = 374400 pcs 40HQ: 1209 cartons * 720 pcs = 870480 pcs

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-This module uses SPI FLASH, is measured in bits, hard disk is measured in bytes, 8bit = 1byte, 16Mbit = 2Mbyte is equivalent to the computer display 2M, please buy customers to distinguish between good capacity-Function:1. Support sample 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, large support for 32G TF card, support for 32G U disk, 64M bytes of NORFLASH4. Multiple control modes, parallel port control mode, serial port mode, AD key control mode5. Broadcast language interrupt function, can pause the background music being played6. Audio data sorted by folder, supports up to 100 folders, every other folder can be assigned 1000 songs7. 30 levels of volume adjustable, 10 levels of EQ adjustable8. Spi flash can be plugged in, connected to the computer can display the disk of spi flash to update the content9. You can control the playback of specified music through the serial port of the microcontroller10. In key mode, you can choose the playback mode: interruptible, non-interruptible, single song cycle, big cycle (interruptible: that is, in the process of playback, press the key will interrupt the current state to perform new; non-interruptible: that is, in the process of playback, press any key is invalid until the end of playback of the current track to be effective)-Application:1. Vehicle navigation voice announcement2. Highway transportation inspection, toll station voice prompts3. Train station, bus station security check voice prompts4. Power, communication, financial business hall voice prompts5. Voice prompts for vehicle entry and exit channel verification6. Border control channel voice prompts7. Multi-channel voice alarm or equipment operation guidance voice8. Electric sightseeing car safe driving voice notification9. Automatic alarm for electromechanical equipment failure10. Firefighting voice alarm prompts11. Automatic broadcasting equipment, timed broadcasting-Basic parameter description:1. UART interface: standard serial port, TTL level, baud rate can be set2. Input voltage: power supply in 3.2V-5V, good for 4.2V3. Rated current: 20ma4. Operating temperature: -40 degrees -70 degrees5. MP3 file format: support for all bit rate 11172-3 and ISO13813-3 layer3 audio decoding, sample rate support (KHZ): 8/11.025/12/16/22.05/24/32/44.1/48, support for Normal, Jazz, Classic, Pop, Rock, and other sound effectsSpecification: Package Weight One Package Weight 0.01kgs / 0.03lb One Package Size 8cm * 5cm * 2cm / 3.15inch * 1.97inch * 0.79inch Qty per Carton 960 Carton Weight 10.70kgs / 23.59lb Carton Size 50cm * 34cm * 32cm / 19.69inch * 13.39inch * 12.6inch Loading Container 20GP: 490 cartons * 960 pcs = 470400 pcs 40HQ: 1137 cartons * 960 pcs = 1091520 pcs

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-This module supports Bluetooth 4.1, support for automatic back to the function, support for WAV + APE + FLAC + MP3 lossless decoding, stereo output, but also comes with a TF card slot, you can plug the TF card, support for U disk, TF card playback-Module parameters:1. Power supply interface: universal Micro USB 5V power supply2. Power supply pad: external 3.7V-5V power supply modification3. USB (U disk) interface: can support the playback of U disk MP3, WAV, APE, FLAC files, support FAT16/32 file format4. TF card slot: can support the playback of TF card in the MP3, WAV, APE, FLAC files, support for FAT16/32 file format5. LED indicator: Bluetooth mode light is on, music playback mode light is flashing6. 3.5mm stereo output: standard 3.5mm interface, can be input stereo audio source, can be plugged into headphones, can also be connected to the amplifier device-Button description:1. MODE: short press, you can switch TF card, U disk, Bluetooth mode switching2. P/P: short press, play/pause3. NEXT/V+: short press for the next song, short press for the volume increase4. PREV/V+: short press for the previous song, long press for the volume decrease5. RPT: short press for single song/loop switching-Use instructions:1. Mode control: when the decoder board is not plugged into a U disk or TF card, the module defaults to Bluetooth mode after power on; when the decoder board is plugged into a U disk or TF card, the module defaults to music mode after power on2. Music mode: when inserting U disk or TF card, you can play the music files stored in it3. Bluetooth mode: in this mode power will be inserted into the english -Then bluetooth device is ready to pair, explains the bluetooth mode and wait for the matching connection; cell phone to open the bluetooth search for HW-BT and connect; when the connection is successful, the decoder board will be prompted by english again - the bluetooth decvice is when successfully connected the bluetooth decvice is connected succesfully, and at this time the decoder board can play music-Note: if U disk playback, it is recommended to use USB 5V power supply (not recommended to use 3.7V lithium battery power supply), because the early U disk does not support 3.3V voltage; U disk or TF card, the decoding only supports FAT16/FAT32 file system, does not support NTFSSpecification: Package Weight One Package Weight 0.02kgs / 0.04lb One Package Size 6cm * 5cm * 2cm / 2.36inch * 1.97inch * 0.79inch Qty per Carton 720 Carton Weight 9.10kgs / 20.06lb Carton Size 50cm * 32cm * 32cm / 19.69inch * 12.6inch * 12.6inch Loading Container 20GP: 520 cartons * 720 pcs = 374400 pcs 40HQ: 1209 cartons * 720 pcs = 870480 pcs

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-Function:1. Bluetooth decoding board support Bluetooth 4.1, support for automatic back to connect function, support WAV + APE + FLAC + MP3 lossless decoding, stereo output, on-board stereo 3W amplifier2. Support USB Audio function, comes with TF card download, support U disk, TF card playback, support infrared remote control-Operating instructions:1. Mode control: when the decoder board is not plugged into the U disk or TF card, the default power-on is Bluetooth mode; when the decoder board is plugged into the U disk or TF card, the default power-on is music mode; mode switching through the remote control MODE key or button2. Music mode: insert the U disk or TF card to play the stored audio files3. Bluetooth mode: switch mode broadcasting english-The bluetooth device is ready to pair, that is, enter the bluetooth mode and wait for pairing; cell phone bluetooth search XY_BT is the decoder board device name, click to connect, the decoder board prompts-The bluetooth device is connected successfully, which means the decoder board is successfully connected to the cell phone, and you can play music4. USB Audio mode: the sound card mode, with a USB cable to connect the computer and the decoder board USB Audio interface, switch the mode prompts the English-USB Mode that is USB Audio mode; open the computer music player to play music, you can play the music in the computer through the decoder board; if inserted into the TF card, you can read and write operations on the TF card (note) if you insert a TF card, you can read and write to the TF card ( note: when using the USB Audio mode, you must not insert a USB flash drive)-Precautions:1. If U disk playback, it is recommended to use USB 5V power supply (not recommended to use 3.7V lithium battery power supply), because the early U disk does not support 3.7V voltage2. When using mobile power or computer power supply must use the POWER interface, you can not use the USB Audio interface, otherwise you can not play the music in the USB flash drive3. U disk or TF card, the decoder board only supports FAT16/FAT32 file system, does not support the NTFS systemSpecification: Package Weight One Package Weight 0.04kgs / 0.10lb One Package Size 12cm * 10cm * 3cm / 4.72inch * 3.94inch * 1.18inch Qty per Carton 120 Carton Weight 4.00kgs / 8.82lb Carton Size 50cm * 3cm * 32cm / 19.69inch * 1.18inch * 12.6inch Loading Container 20GP: 5555 cartons * 120 pcs = 666600 pcs 40HQ: 12896 cartons * 120 pcs = 1547520 pcs

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1. Power (Max): 600W2. Impedance: 4 ohm3. Sensitivity: 75-90dB4. Distortion: 0.01 percent5. Speakers: capable of pushing 8 inch / 10 inch / 12 inch speakers6. Tweeter: 4 ohm 10 watt7. Powerful subwoofer, good sound quality, no distortion, give you excellent listening enjoyment8. Light weight, easy to install9. Sturdy and stable structure provides durability and reliability to ensure the operation of your car audio system10. Size: about 170 x 155mmSpecification: Package Weight One Package Weight 0.65kgs / 1.44lb One Package Size 18cm * 18cm * 5cm / 7.09inch * 7.09inch * 1.97inch Qty per Carton 20 Carton Weight 14.50kgs / 31.97lb Carton Size 38cm * 38cm * 32cm / 14.96inch * 14.96inch * 12.6inch Loading Container 20GP: 577 cartons * 20 pcs = 11540 pcs 40HQ: 1339 cartons * 20 pcs = 26780 pcs

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1. Material: aluminum alloy2. Voltage: 12V3. Power (Max): 1200W4. With current protection, overload protection, short circuit protection5. High efficiency, wide frequency, good heat dissipation6. Light weight, simple and convenient installation7. Mellow sound, increase the musical expression of the equipment, greatly enhance the overall sound effect8. To ensure that the amplifier works with sufficient power, the use of safer, more efficient and stable9. Size: about 21.3 x 17cmSpecification: Package Weight One Package Weight 0.85kgs / 1.88lb One Package Size 22cm * 18cm * 5cm / 8.66inch * 7.09inch * 1.97inch Qty per Carton 20 Carton Weight 18.50kgs / 40.79lb Carton Size 46cm * 38cm * 32cm / 18.11inch * 14.96inch * 12.6inch Loading Container 20GP: 476 cartons * 20 pcs = 9520 pcs 40HQ: 1106 cartons * 20 pcs = 22120 pcs

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1. Maximum power: 600W2. Can push 8-12 inch woofer3. Voltage: 12V4. Rated power: 200W5. Output impedance: 4-8 ohms6. Frequency response: 28-160KHz7. Distortion: less than 0.5 percent8. Convenient and beautiful wiring, adequate heat dissipation9. Clear sound quality, distortion is significantly reduced, giving you great listening pleasure10. Size: about 170 x 145mmSpecification: Package Weight One Package Weight 0.72kgs / 1.60lb One Package Size 18cm * 15cm * 5cm / 7.09inch * 5.91inch * 1.97inch Qty per Carton 40 Carton Weight 30.00kgs / 66.14lb Carton Size 51cm * 38cm * 32cm / 20.08inch * 14.96inch * 12.6inch Loading Container 20GP: 429 cartons * 40 pcs = 17160 pcs 40HQ: 998 cartons * 40 pcs = 39920 pcs

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1. Maximum power: 1000W2. Rated power: 600W3. Impedance: 4 ohm4. Sensitivity: 75-90dB5. Distortion: 0.01 percent6. Speakers: can push 8 inch / 10 inch / 12 inch speakers7. Light weight, easy to operate and install8. Aluminum alloy material, corrosion resistance, long service life9. High power, good sound quality, no distortion, giving you excellent listening enjoyment10. Size: about 25.5 x 15.5cmSpecification: Package Weight One Package Weight 0.86kgs / 1.90lb One Package Size 26cm * 16cm * 5cm / 10.24inch * 6.3inch * 1.97inch Qty per Carton 20 Carton Weight 18.50kgs / 40.79lb Carton Size 51cm * 34cm * 28cm / 20.08inch * 13.39inch * 11.02inch Loading Container 20GP: 549 cartons * 20 pcs = 10980 pcs 40HQ: 1275 cartons * 20 pcs = 25500 pcs

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1. The motor and servo can be DIYed with building blocks to create various shapes and complete interesting and fun ways of playing.2. Programmable building block servo/motor: Both the servo and motor contain extreme gear overload protection, which is protected by jumping teeth when the limit torque is exceeded or twisted randomly.3. Environmentally friendly POM plastic glue, not easy to damage, more assured for children to use1. How to choose a motor/servo--The red building block motor can control the rotation speed and direction of the output shaft, can rotate continuously and uses the XH 2.54 interface, which is suitable for projects with continuous rotation, such as cars.--The gray building block servo can control the rotation angle of the output shaft, uses the DuPont line interface and is suitable for projects with locked angles, such as robotic arms, tower cranes, etc.2. How to choose a single-axis/dual-axis servo--The gray servo 1 generation has a single output shaft, which can be connected to gears, tires, building blocks, etc.; the output shaft has a length limit. The rotation angle can be achieved: 0~270 degrees. Suitable for projects with locked angles, such as robotic arms, cranes, etc.--The gray servo 2nd generation has dual output shafts, which can connect two cross shafts at the same time, and the output shaft length is not limited. The rotation angle can be achieved: 0~360 degrees, suitable for dual output shaft angle rotation projects, such as dump trucks, forklifts, etc.Specification: Package Weight One Package Weight 0.04kgs / 0.10lb One Package Size 10cm * 8cm * 5cm / 3.94inch * 3.15inch * 1.97inch Qty per Carton 90 Carton Weight 4.70kgs / 10.36lb Carton Size 32cm * 42cm * 32cm / 12.6inch * 16.54inch * 12.6inch Loading Container 20GP: 620 cartons * 90 pcs = 55800 pcs 40HQ: 1439 cartons * 90 pcs = 129510 pcs

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1. The motor and servo can be DIYed with building blocks to create various shapes and complete interesting and fun ways of playing.2. Programmable building block servo/motor: Both the servo and motor contain extreme gear overload protection, which is protected by jumping teeth when the limit torque is exceeded or twisted randomly.3. Environmentally friendly POM plastic glue, not easy to damage, more assured for children to use1. How to choose a motor/servo--The red building block motor can control the rotation speed and direction of the output shaft, can rotate continuously and uses the XH 2.54 interface, which is suitable for projects with continuous rotation, such as cars.--The gray building block servo can control the rotation angle of the output shaft, uses the DuPont line interface and is suitable for projects with locked angles, such as robotic arms, tower cranes, etc.2. How to choose a single-axis/dual-axis servo--The gray servo 1 generation has a single output shaft, which can be connected to gears, tires, building blocks, etc.; the output shaft has a length limit. The rotation angle can be achieved: 0~270 degrees. Suitable for projects with locked angles, such as robotic arms, cranes, etc.--The gray servo 2nd generation has dual output shafts, which can connect two cross shafts at the same time, and the output shaft length is not limited. The rotation angle can be achieved: 0~360 degrees, suitable for dual output shaft angle rotation projects, such as dump trucks, forklifts, etc.Specification: Package Weight One Package Weight 0.04kgs / 0.10lb One Package Size 10cm * 8cm * 5cm / 3.94inch * 3.15inch * 1.97inch Qty per Carton 90 Carton Weight 4.70kgs / 10.36lb Carton Size 32cm * 42cm * 32cm / 12.6inch * 16.54inch * 12.6inch Loading Container 20GP: 620 cartons * 90 pcs = 55800 pcs 40HQ: 1439 cartons * 90 pcs = 129510 pcs

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1. The motor and servo can be DIYed with building blocks to create various shapes and complete interesting and fun ways of playing.2. Programmable building block servo/motor: Both the servo and motor contain extreme gear overload protection, which is protected by jumping teeth when the limit torque is exceeded or twisted randomly.3. Environmentally friendly POM plastic glue, not easy to damage, more assured for children to use1. How to choose a motor/servo--The red building block motor can control the rotation speed and direction of the output shaft, can rotate continuously and uses the XH 2.54 interface, which is suitable for projects with continuous rotation, such as cars.--The gray building block servo can control the rotation angle of the output shaft, uses the DuPont line interface and is suitable for projects with locked angles, such as robotic arms, tower cranes, etc.2. How to choose a single-axis/dual-axis servo--The gray servo 1 generation has a single output shaft, which can be connected to gears, tires, building blocks, etc.; the output shaft has a length limit. The rotation angle can be achieved: 0~270 degrees. Suitable for projects with locked angles, such as robotic arms, cranes, etc.--The gray servo 2nd generation has dual output shafts, which can connect two cross shafts at the same time, and the output shaft length is not limited. The rotation angle can be achieved: 0~360 degrees, suitable for dual output shaft angle rotation projects, such as dump trucks, forklifts, etc.Specification: Package Weight One Package Weight 0.04kgs / 0.10lb One Package Size 10cm * 8cm * 5cm / 3.94inch * 3.15inch * 1.97inch Qty per Carton 90 Carton Weight 4.70kgs / 10.36lb Carton Size 32cm * 42cm * 32cm / 12.6inch * 16.54inch * 12.6inch Loading Container 20GP: 620 cartons * 90 pcs = 55800 pcs 40HQ: 1439 cartons * 90 pcs = 129510 pcs

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1. Application: DIY and repair equipment and appliances2. Light angle: 120 degrees3. Style: dome lead4. Working voltage:Red: 1.9V-2.1VYellow: 1.9V-2.1VGreen: 1.9V-2.1VBlue: 3.0V-3.2VWhite: 3.0V-3.2V5. MCD:Red: 600-800Yellow: 600-800Green: 600-800Blue: 1000-1200White: 14000-160006. Shaft length:Red: 620-625Yellow: 590-592Green: 567-570Blue: 460-465White: color temperature 80007. Specification: 100pcs of each of 5 colors8. Weight: F3 about 80g; F5 about 170gSpecification: Package Weight One Package Weight 0.10kgs / 0.23lb One Package Size 14cm * 8cm * 3cm / 5.51inch * 3.15inch * 1.18inch Qty per Carton 140 Carton Weight 15.50kgs / 34.17lb Carton Size 50cm * 38cm * 30cm / 19.69inch * 14.96inch * 11.81inch Loading Container 20GP: 467 cartons * 140 pcs = 65380 pcs 40HQ: 1086 cartons * 140 pcs = 152040 pcs

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1. Material: copper2. Widely used in rings, hooks, quick disconnect and butt connectors3. Easy to operate without soldering kit, provide durable connection for your wires4. Durable terminal blocks provide safe and durable cable and wire connections5. It includes 6 sizes to meet different needs6. Clear box with grid design makes it easy to store in an organized way and carry for daily tasks7. Smooth surface without burrs makes cleaning and maintenance easier and reduces wear and tear8. Box size: approx. 130 x 65 x 23mm9. Products include: M3 x 50, M4 x 20, M5 x 20, M6 x 20, M8 x 20, M10 x 20Specification: Package Weight One Package Weight 0.10kgs / 0.23lb One Package Size 15cm * 8cm * 4cm / 5.91inch * 3.15inch * 1.57inch Qty per Carton 100 Carton Weight 11.50kgs / 25.35lb Carton Size 50cm * 38cm * 32cm / 19.69inch * 14.96inch * 12.6inch Loading Container 20GP: 438 cartons * 100 pcs = 43800 pcs 40HQ: 1018 cartons * 100 pcs = 101800 pcs

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1. Application: DIY and repair equipment and appliances2. Light angle: 120 degrees3. Style: dome lead4. Working voltage:Red: 1.9V-2.1VYellow: 1.9V-2.1VGreen: 1.9V-2.1VBlue: 3.0V-3.2VWhite: 3.0V-3.2V5. MCD:Red: 600-800Yellow: 600-800Green: 600-800Blue: 1000-1200White: 14000-160006. Shaft length:Red: 620-625Yellow: 590-592Green: 567-570Blue: 460-465White: color temperature 80007. Specification: 100pcs of each of 5 colors8. Weight: F3 about 80g; F5 about 170gSpecification: Package Weight One Package Weight 0.20kgs / 0.45lb One Package Size 19cm * 11cm * 4cm / 7.48inch * 4.33inch * 1.57inch Qty per Carton 70 Carton Weight 15.50kgs / 34.17lb Carton Size 50cm * 39cm * 35cm / 19.69inch * 15.35inch * 13.78inch Loading Container 20GP: 390 cartons * 70 pcs = 27300 pcs 40HQ: 907 cartons * 70 pcs = 63490 pcs

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1. Dielectric: aluminum2. Capacitance: 0.1 UF-1000 UF3. Resistance voltage: 50V4. Frequency: low frequency5. These are miniature electrolytic capacitors that are commonly used in the manufacture of circuits6. Practical design, very popular among electronics and hobbyists7. The set includes 24 sizes of capacitors to meet your basic needs8. Safely packaged and stored in a plastic box for easy use and storage9. Suitable for a variety of electronic applications, perfect for DIY accessories10. Box size: about 195 x 131 x 36mm11. Specifications: 0.1UF 50V x 30, 0.22UF 50V x 20, 0.47UF 50V x 20, 1UF 50V x 20, 2.2UF 50V x 30, 3.3UF 50V x 30, 4.7UF 50V x 30, 10UF 25V x 30, 10UF 50V x 20, 22UF 16V x 30, 22UF 25V x 30, 33UF 16V x 30, 47UF 10V x 30, 47UF 25V x 20, 47UF 50V x 15, 100UF 16V x 20, 100UF 25V x 15, 220UF 10V x 15, 220UF 25V x 15, 330UF 25V x 10, 470UF 10V x 10, 470UF 16V x 10, 680UF 16V x 10, 1000UF 16V x 10Specification: Package Weight One Package Weight 0.30kgs / 0.67lb One Package Size 21cm * 15cm * 4cm / 8.27inch * 5.91inch * 1.57inch Qty per Carton 30 Carton Weight 10.50kgs / 23.15lb Carton Size 44cm * 38cm * 32cm / 17.32inch * 14.96inch * 12.6inch Loading Container 20GP: 498 cartons * 30 pcs = 14940 pcs 40HQ: 1157 cartons * 30 pcs = 34710 pcs

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1. Material: flame-retardant PA/PC2. Current and voltage: 25A/400V3. Wiring range: 0.2-4 square millimeters4. Wire stripping length: 10mm5. Not easy to change color, not easy to deform, flame-retardant insulation, high temperature resistance6. Durable, easy to install, both hard wire and soft wire can be inserted7. Easy to install, quick and simple wiring, multi-strand soft wire, single-strand hard wire, etc. can be directly inserted, strong sealing, not easy to fall off8. Size: 42.6x11.8x15.8mm9. Weight: 6.6gSpecification: Package Weight One Package Weight 0.08kgs / 0.17lb One Package Size 15cm * 15cm * 4cm / 5.91inch * 5.91inch * 1.57inch Qty per Carton 48 Carton Weight 4.70kgs / 10.36lb Carton Size 47cm * 32cm * 34cm / 18.5inch * 12.6inch * 13.39inch Loading Container 20GP: 521 cartons * 48 pcs = 25008 pcs 40HQ: 1210 cartons * 48 pcs = 58080 pcs

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1. Material: flame-retardant PA/PC2. Current and voltage: 25A/400V3. Wiring range: 0.2-4 square millimeters4. Wire stripping length: 10mm5. Not easy to change color, not easy to deform, flame-retardant insulation, high temperature resistance6. Durable, easy to install, both hard wire and soft wire can be inserted7. Easy to install, quick and simple wiring, multi-strand soft wire, single-strand hard wire, etc. can be directly inserted, strong sealing, not easy to fall off8. Size: 42.6x16.7x15.8mm9. Weight: 9.4gSpecification: Package Weight One Package Weight 0.06kgs / 0.14lb One Package Size 10cm * 10cm * 4cm / 3.94inch * 3.94inch * 1.57inch Qty per Carton 96 Carton Weight 6.90kgs / 15.21lb Carton Size 42cm * 32cm * 34cm / 16.54inch * 12.6inch * 13.39inch Loading Container 20GP: 583 cartons * 96 pcs = 55968 pcs 40HQ: 1354 cartons * 96 pcs = 129984 pcs

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1. Material: flame retardant PA/PC2. Current and voltage: 75A/450V3. Wiring range: 6-25 square millimeters4. Wire stripping length: 10mm5. Not easy to change color, not easy to deform, flame retardant insulation, high temperature resistance6. Durable, easy to install, both hard wire and soft wire can be inserted7. Easy to install, quick and simple wiring, multi-strand soft wire, single-strand hard wire, etc. can be directly inserted, strong sealing, not easy to fall off8. Size: 75.5x27.6x40mm9. Weight: 48.9gSpecification: Package Weight One Package Weight 0.06kgs / 0.14lb One Package Size 10cm * 6cm * 5cm / 3.94inch * 2.36inch * 1.97inch Qty per Carton 144 Carton Weight 12.70kgs / 28.00lb Carton Size 42cm * 38cm * 32cm / 16.54inch * 14.96inch * 12.6inch Loading Container 20GP: 522 cartons * 144 pcs = 75168 pcs 40HQ: 1212 cartons * 144 pcs = 174528 pcs

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1. Material: flame retardant PA/PC2. Current and voltage: 75A/450V3. Wiring range: 6-25 square millimeters4. Wire stripping length: 10mm5. Not easy to change color, not easy to deform, flame retardant insulation, high temperature resistance6. Durable, easy to install, both hard wire and soft wire can be inserted7. Easy to install, quick and simple wiring, multi-strand soft wire, single-strand hard wire, etc. can be directly inserted, strong sealing, not easy to fall off8. Size: 75.5x40.05x40mm9. Weight: 72.9gSpecification: Package Weight One Package Weight 0.08kgs / 0.19lb One Package Size 10cm * 8cm * 8cm / 3.94inch * 3.15inch * 3.15inch Qty per Carton 64 Carton Weight 6.30kgs / 13.89lb Carton Size 42cm * 34cm * 34cm / 16.54inch * 13.39inch * 13.39inch Loading Container 20GP: 549 cartons * 64 pcs = 35136 pcs 40HQ: 1275 cartons * 64 pcs = 81600 pcs

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1. Compliant with USB specification revision 2.0, backward compatible with USB specification revision 1.12. Support 4/3/2 downstream ports through I/O pin configuration3. Upstream port supports high-speed (HS) and full-speed (FS) traffic, downstream port supports HS, FS and low-speed (LS) traffic4. 1 control pipe (endpoint 0, 64-byte data payload) and 1 interrupt pipe (endpoint 1, 1-byte data payload)5. On-chip 8-bit microprocessor, RISC-like architecture, USB optimized instruction set6. Performance: 6 MIPS@12MHz7. With 64-byte RAM and 2K Mask ROM8. Support customized PID, VID, and support downstream port configuration by reading external EEPROM9. Low power consumption, built-in 5V to 3.3V regulator10. Each downstream port supports two-color status indicators, and its automatic and manual modes are compliant with USB specification revision 2.011. Built-in upstream 1.5K pull-up and downstream 15K pull-down12. Embedded serial resistor for USB signal13. Supports separate and joint modes of power management and overcurrent detection of downstream ports14. Power enable pin supports low/high enable power switch15. Complies with bus power requirements16. Automatically switches between self-powered and bus-powered modes17. Supports composite devices through I/O pin configuration (downstream ports are not removable)18. Built-in PLL supports external 12MHz crystal/oscillator clock input19. Improved output driver through slew rate control to reduce EMI, internal power failure detection to recover ESD20. The number of downstream ports can be configured through GPIO without external EEPROM21. Application range: independent USB hub, PC motherboard USB hub, laptop docking, game console, LCD monitor hub, composite device supporting USB hub function22. Chip: Genesys GL850Packing list:- GL850 independent USB 2.0 hub x 1- USB2.0 to 4 Pin cable x 1Specification: Package Weight One Package Weight 0.05kgs / 0.12lb One Package Size 15cm * 14cm * 3cm / 5.91inch * 5.51inch * 1.18inch Qty per Carton 60 Carton Weight 4.00kgs / 8.82lb Carton Size 50cm * 32cm * 30cm / 19.69inch * 12.6inch * 11.81inch Loading Container 20GP: 555 cartons * 60 pcs = 33300 pcs 40HQ: 1289 cartons * 60 pcs = 77340 pcs

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1. This product is an industrial-grade 8-channel relay module controlled by RS485 interface, featuring 8-channel switch input, adopting Modbus RTU protocol, and equipped with built-in power isolation, magnetic coupling isolation, and TVS protection circuits. It is designed with an ABS housing. This product is easy to operate and features fast communication speed, stability, reliability, and safety. It is suitable for various industrial control devices or applications with high communication requirements.2. It supports setting the device address (1 to 255) to cascade multiple devices through the RS485 bus.3. It has flashing on and off functions, allowing parameters to be set in the instructions to operate the relay to turn on for a certain period and then automatically turn off.4. It has an integrated power isolation circuit on the board, providing stable isolated voltage, and the isolation end does not require additional power supply.5. It has an integrated magnetic coupling isolation circuit on the board, capable of signal isolation, with high reliability, strong anti-interference, and low power consumption.6. It has a self-resetting fuse and TVS (transient voltage suppressor) on the board, effectively suppressing surge voltage and transient peak voltage in the circuit, preventing overcurrent and overvoltage, and protecting against lightning and static electricity.7. It has an integrated optocoupler isolation circuit on the board to prevent interference from the relays high-voltage circuit.8. It uses a dedicated relay driver chip with built-in freewheeling diode protection, providing stronger and more stable driving capability.9. The switch input has bidirectional optocoupler isolation, supporting both passive and active switch input, with an internal anti-bounce algorithm. The relay supports switch input linkage mode or flip mode control.10. It has an anti-reverse connection circuit on the board to prevent damage to the circuit from reversed positive and negative connections.11. It uses high-quality relays, allowing a load of up to 10A 250V AC or 10A 30V DC.12. It has a rail-mounted ABS protective housing, making installation and use convenient, and is safer with the housing.13. It has an external LED indicator light for easily checking the MCU status and signal transmission and reception status. Parameters:1. Power Supply Voltage: 7 - 36V2. Communication Interface: RS4853. Communication Baud Rate: 4800, 9600, 19200, 38400, 57600, 115200, 128000, 2560004. Default Communication Format: 9600, N, 8, 15. Relay Channels: 8 channels6. Contact Type: One normally open, one normally closed7. Contact Load: Less than or equal to 10A 250V AC or less than or equal to 10A 30V DC8. Digital Input: 8DI, 5 - 36V, passive input/active input (NPN type or PNP type), built-in bidirectional optocoupler9. Modbus Protocol: Standard Modbus RTU protocol10. RS485 Address Setting: 1 - 25511. Indicator Lights:--STA: MCU indicator light, flashes when MCU is working normally--TXD: Transmission indicator light, lights up when data is being sent--RXD: Reception indicator light, lights up when data is being receivedSpecification: Package Weight One Package Weight 0.15kgs / 0.34lb One Package Size 20cm * 12cm * 6cm / 7.87inch * 4.72inch * 2.36inch Qty per Carton 30 Carton Weight 5.60kgs / 12.35lb Carton Size 42cm * 38cm * 32cm / 16.54inch * 14.96inch * 12.6inch Loading Container 20GP: 522 cartons * 30 pcs = 15660 pcs 40HQ: 1212 cartons * 30 pcs = 36360 pcs

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1. Brush: copper2. Resistor: bakelite3. Rotation angle: 200 degrees4. Rotational torque: 60-150 g/cm5. Stop strength: 500 g/cm6. Mechanical strength: resistor can withstand 1 kg of pressure without breaking7. Resistance range (Ohms): 100R-1M8. Resistance variation characteristics: B9. Operating voltage: 50V (MAX)10. Rated: 0.1W11. Residual resistance: no more than 5 percent of the nominal resistance, no more than 30 ohms12. Rotational Life: 15 percent resistance change after 100 rotations without load13. Load Life: 5 percent resistance change after 3 hours of rated power14. Adjustable resistors have a wide range of applications, including home appliances and the electronic security industry. Specific products include televisions, induction cookers, rice cookers, and more.Packing List:- 10 x 500R ohm- 10 x 1K ohms- 10 x 2K ohm- 10 x 5K ohms- 10 x 10K ohm- 10 x 20K ohm- 10 x 50K ohm- 10 x 100K ohms- 10 x 200K ohms- 10 x 1M ohmSpecification: Package Weight One Package Weight 0.06kgs / 0.14lb One Package Size 15cm * 8cm * 5cm / 5.91inch * 3.15inch * 1.97inch Qty per Carton 72 Carton Weight 5.50kgs / 12.13lb Carton Size 47cm * 34cm * 32cm / 18.5inch * 13.39inch * 12.6inch Loading Container 20GP: 521 cartons * 72 pcs = 37512 pcs 40HQ: 1210 cartons * 72 pcs = 87120 pcs

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1. Brush: copper2. Resistor: bakelite3. Rotation angle: 200 degrees4. Rotational torque: 60-150 g/cm5. Stop strength: 500 g/cm6. Mechanical strength: the resistor can withstand 1 kg of pressure without breaking7. Resistance range (Ohms): 100R-1M8. Resistance change characteristic: B9. Operating voltage: 50V (MAX)10. Rated: 0.1W11. Residual resistance: no more than 5 percent of the nominal resistance, no more than 30 ohms12. Rotational life: 15 percent resistance change after 100 rotations without load13. Load life: 5 percent resistance change after 3 hours with rated power14. Adjustable resistors have a wide range of applications, including home appliances and the electronic security industry. Specific products include televisions, induction cookers, rice cookers, and more.Packaging contents:- 10 x 100 ohm- 10 x 200 ohm- 10 x 470 ohm- 10 x 1k ohm- 10 x 3.3k ohm- 10 x 4.7k ohm- 10 x 10k ohm- 10 x 20k ohm- 10 x 30k ohm- 10 x 47k ohm- 10 x 100k ohm- 10 x 200k ohm- 10 x 300k ohm- 10 x 500k ohm- 10 x 1m ohmSpecification: Package Weight One Package Weight 0.11kgs / 0.25lb One Package Size 20cm * 12cm * 4cm / 7.87inch * 4.72inch * 1.57inch Qty per Carton 48 Carton Weight 6.40kgs / 14.11lb Carton Size 42cm * 38cm * 34cm / 16.54inch * 14.96inch * 13.39inch Loading Container 20GP: 491 cartons * 48 pcs = 23568 pcs 40HQ: 1140 cartons * 48 pcs = 54720 pcs

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1. The breadboard is made of ABS plastic with black printed instructions, including color codes for each strip.2. The solderless breadboard features a self-adhesive tape strip on the back for easy attachment to any surface. The contact points are marked both horizontally and vertically.3. The solderless breadboard has 830 contacts, making it easy to quickly assemble electronic circuits.It is extremely easy to use, especially with DuPont multi-color jumper cables; no soldering is required; simply plug and unplug.4. Primarily designed for breadboard prototyping, it is compatible with Arduino projects, Raspberry Pi, single-board computers, LoveRPi kits, and other DIY projects. It is ideal for labs, industry, universities, schools, hobbies, or model making.5. It ensures uninterrupted circuit connections and is designed to resist failure under various conditions, providing safe and stable connections between components.6. Set includes an 830-hole breadboard, power supply, and 65 breadboard wires.Specification: Package Weight One Package Weight 0.16kgs / 0.36lb One Package Size 26cm * 19cm * 4cm / 10.24inch * 7.48inch * 1.57inch Qty per Carton 8 Carton Weight 2.40kgs / 5.29lb Carton Size 28cm * 21cm * 34cm / 11.02inch * 8.27inch * 13.39inch Loading Container 20GP: 1333 cartons * 8 pcs = 10664 pcs 40HQ: 3096 cartons * 8 pcs = 24768 pcs

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1. Material: 6061 aluminum2. Surface treatment: hard anodizing3. Torque: 36NM (LAP40); 10NM (LASD34); 4NM (LASD26)4. Rated torque: 14NM (LAP40); 5NM (LASD34); 2NM (LASD26)5. Speed: 8500rpm (LAP40); 10000rpm (LASD34) (LASD26)6. Aluminum alloy coupling, elastic compensation for radial, angular and axial misalignment7. Applications: CNC engraving machines, CNC lathes, laser machines, papermaking, printing, packaging machinery, encoder dispensing machines, spraying equipment. High torque; LAP40 is used in heavy-duty equipment; LASD34/LASD26 are more commonly used in automated equipment.8. The cup head has a rounded chamfer to prevent finger scratches during installation.9. Weight: 129g (LAP40); 83g (LASD34); 39g (LASD26)Specification: Package Weight One Package Weight 0.05kgs / 0.12lb One Package Size 10cm * 7cm * 5cm / 3.94inch * 2.76inch * 1.97inch Qty per Carton 120 Carton Weight 7.10kgs / 15.65lb Carton Size 42cm * 37cm * 32cm / 16.54inch * 14.57inch * 12.6inch Loading Container 20GP: 536 cartons * 120 pcs = 64320 pcs 40HQ: 1244 cartons * 120 pcs = 149280 pcs

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1. Material: 6061 aluminum2. Surface treatment: hard anodizing3. Torque: 36NM (LAP40); 10NM (LASD34); 4NM (LASD26)4. Rated torque: 14NM (LAP40); 5NM (LASD34); 2NM (LASD26)5. Speed: 8500rpm (LAP40); 10000rpm (LASD34) (LASD26)6. Aluminum alloy coupling, elastic compensation for radial, angular and axial misalignment7. Applications: CNC engraving machines, CNC lathes, laser machines, papermaking, printing, packaging machinery, encoder dispensing machines, spraying equipment. High torque; LAP40 is used in heavy-duty equipment; LASD34/LASD26 are more commonly used in automated equipment.8. The cup head has a rounded chamfer to prevent finger scratches during installation.9. Weight: 129g (LAP40); 83g (LASD34); 39g (LASD26)Specification: Package Weight One Package Weight 0.10kgs / 0.22lb One Package Size 11cm * 9cm * 5cm / 4.33inch * 3.54inch * 1.97inch Qty per Carton 96 Carton Weight 10.30kgs / 22.71lb Carton Size 46cm * 38cm * 32cm / 18.11inch * 14.96inch * 12.6inch Loading Container 20GP: 476 cartons * 96 pcs = 45696 pcs 40HQ: 1106 cartons * 96 pcs = 106176 pcs

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