Controllers Waveshare IO Expansion ShieldArduino IO Expansion Shield Highlights Wewoo Waveshare IO Expansion ShieldArduino IO Expansion Shield Waveshare IO Expansion Shield, Arduino IO Expansion Shield Features 1. 3 Sensor Interfaces and 4-pin, supports direct connection of sensors without complicating custom connections 2. XBee module connector 3. What's on board WIFI-LPT100 wireless module connector 1. XBee module connector 2. IIC interface 3. SPI interface 4. 3 pin sensor interface - VCC: Power positive - GND: Ground - D: digital pin, match Arduino board 5. WIFI-LPT100 connector 6. 4 pin sensor interface - VCC: Power positive - GND: ground - A: analog pin, corresponds to Arduino board - D: digital pin, corresponds to Arduino board from the connection of TXD and TX, RXD and RX respectively, the Arduino board can debug / configure the XBee module or the WIFI-LPT100 through the serial port. - When connecting TXD and RX, RXD and TX respectively, the Arduino board can communicate with the XBee module or WIFI-LPT100 through the serial port. 9. Power indicator 10. WIFI-LPT100 status indicator 11. XBee module status indicator 12. WIFI-LPT100 RELOAD button: to restore factory settings 13. XBee module and WIFI-LPT100 RESET button 14. XBee Module EASYLINK Button Package Weight: One package weight0.040kgCarton Quantity1280Carton Weight15,000kgCarton Size56cm*40cm*40cm