Adopts MCP2515 and SN65HVD230 dual chips combined solution, allows 2-channel CAN communication; Integrated power isolation, providing stable isolated voltage, requires no extra power supply for the isolated terminal; Onboard digital isolator, signal isolation makes the communication more safe, more stable, and better anti-interference.; Onboard voltage translator, select 3.3V /5V operating voltage by jumper; Onboard 120 terminal resistor, configured by jumper