Xbee I/O expansion board Extended 14 digital IO ports (12 servo interface) and power supply - 6 analog IO ports and power supply - 1 digital port for external power supply - automatic switching between digital port and integrated external power supply - 1 input terminal for external power supply + input pins - RS485 interface - reset button - interface for xbee/Bluetooth Bee Bluetooth wireless modules - APC220 / Bluetooth V3 interfaces for Bluetooth wireless data transmission - IIC / I2C / TWI interfaces - 3.3 V output connector - interface for SD card module https://elecena.pl/product/21114544/ex018-arduino-shield-xbee-i-o-expansion-board 2022-06-29 https://elecena.pl/product/21114544/ex018-arduino-shield-xbee-i-o-expansion-board 2025-04-07