Features: For Standard Raspberry-Pi 40PIN GPIO extension header, supports for Raspberry-Pi series boards; CAN function, onboards CAN controller MCP2515-SPI interface, onboards transceiver SN65HVD230DR; Reserved control pin, allows to work with other control boards; Onboards TVS (Transient Voltages Suppressor), effectively suppress surge-voltage and transient spike-voltage in the circuit for RS485 transceiving, lightning-proof & anti-electrostatic; RS485 function, controlled via UART, half-duplex communication, supports automatic control without programming, onboards transceiver SP3485; Specifications: Material:PCB Operating voltages:3.3V CAN controller: MCP2515 CAN transceiver: SN65HVD230 485 transceiver: SP3485 Note: Please allow 1-2cm errors due to manual measurement,please make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1xRS485 CAN HAT