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1. Based on Raspberry Pi 40 PIN GPIO interface, suitable for Raspberry Pi series motherboards 2. With CAN function, using SPI interface CAN controller MCP2515, with transceiver SIT65HVD230DR 3. With RS485 function, using UART control, half-duplex communication, supporting automatic switching of transceiver status without program control, transceiver is SP3485 4. Onboard 120 ohm terminal resistors for RS485 and CAN interfaces, which can be enabled by setting the dip switch 5. Onboard TVS (transient voltage suppression tube), RS485 communication can effectively suppress surge voltage and transient spike voltage in the circuit, lightning protection and anti-static 6. Reserved control interface for convenient control by other controllers 7. Working voltage: 3.3V 8. Purpose: RS485 CAN interface expansion 9. Product size: 65 x 30mm 10. Weight: 18g
