Sensor Expansion Board 14 Digital 6 Ports Analog IO Expansion Module for V7 3.3V 5V 1. Multi-function: This board expands the port to 3P interface, can connect it directly to the 3P sensor module, with 14 digital ports (6 PWM ports) and 6 ports analog.2. Communication Interface: Inside this expansion card, you can insert Bluetooth, WIFI and Xbee cased Xbee communication modules.3. Storage module interface: This expansion card is also set to the expansion interfaces of ordinary Bluetooth module, for APC and memory card.4. Support external power extension: the corner terminal supplies power to the main controller and expansion board, and the central terminal supplies power to the control chip on the digital port.5. 2 Power Supplies: This expansion board is 3.3V 5V switchable to adapt to different controller operating voltages. Specification: Item Type: Sensor Expansion Board Material: PCB Compatible with: for MGEA, for DUE Power Supply: 3.3V 5V Switchable Interface: I2C Technical Support: for XBEE, for APC220 communication module and read-write memory card Package List: 1 x Sensor Expansion Board