CAN-capable, CAN controller MCP2515 using SPI with SIT65HVD230DR transceiver On-board digital isolation chip isolation communication is , better stability, for stronger anti-interference Onboard , RS485 communication with for protection and anti-static With RS485 function, UART control half-duplex communication with SP3485 transceiver to support automatic switching of transceiver and high quality Based on the GPIO 40Pin design, it is convenient to directly plug into the for Nano board. Item: RS485 CAN for Nano Expansion Board CAN Controller:MCP2515 CAN Transceiver: SIT65HVD230DR Digital Isolation Chip:ADUM1412 RS485 Transceiver: SP3485 Working 3.3V Fixed Screw Hole Diameter:3mm Item Size: 100x79mm/3.94x3.1in (The product appearance and printed words depending on the batch, but this does not affect use) Color: As shown Material: PCB Package Contents: 1 * RS485 CAN Expansion Board Only the above package content, other products are not included. Note: Light reflection 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.