Standard compatible with Raspberry Pi 40PIN GPIO extension header, supports compatible with Raspberry Pi series boardsCAN function, onboard CAN controller MCP2515 via SPI interface, onboard transceiver SN65HVD230RS485 function, controlled via UART, half-duplex communication, supports automatic TX/RX control without programming, onboard transceiver SP3485Onboard TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit compatible with RS485 transceiving, anti-electrostaticReserved control pins, allows to work with other control boardsOperating voltage: 3.3VCAN controller: MCP2515CAN transceiver: SN65HVD230485 transceiver: SP3485Dimension: 65mm x 30mmMaterial:plasticcolour:bluePackage Contents:1 * Module HAT Expansion BoardOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.