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