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Raspberry Pi GPIO-232 Expansion Board LED Nixie Tube 485 232 UART Keys Multifunction GPIO Extension Board for Raspberry Pi 4B/3B+/3B
Parameters:
1. The RS485 module
2. The RS232 module(green DB9)
3. EEPROM (24 c16)
4. Three leds
5. Three buttons
6. A buzzer
7. 4 in 1 digital tube
8. The rest of the IO mouth raises
9. TF card module (SPI)
Packing List :
1 X GPIO Extension Board ( not include Raspberry Pi )
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