The RS485 CAN HAT enables stable communication between your Pi and other devices over long distances via RS485/CAN functions. Features • Connectivity of Raspberry Pi, compatible with Raspberry Pi Zero/Zero W/Zero WH/2B/3B/3B+ • CAN function, on-board MCP2515 CAN controller via SPI interface, with SN65HVD230 transceiver • RS485 function, controlled via UART, half-duplex communication, with SP3485 transmitter-receiver • Reserved control pins, enabling work with other control boards • Development resources and instruction manual included in delivery (examples in the WiringPi/python). Specifications • Operating voltage: 3.3 V • CAN controller: MCP2515 • CAN transceiver: SN65HVD230 • 485 transmitter-receiver: SP3485 • Dimensions: 65 x 30 mm Included in delivery • RS485 CAN HAT • RPi pack of screws (2 pieces) Documentation/downloads https://www.waveshare.com/wiki/RS485CANHAT