The high speed rate is up to 1Mbit/s, the electromagnetic radiation EME is extremely low, and the electromagnetic anti-interference EMI is extremely high. Nodes that are not powered on will not cause disturbance to the bus, and the TxD pin has a timeout function to prevent clamping at the dominant bus level. The silent mode provides listen-only mode and Babbling Idiot protection to protect the bus pins from transient interference in the car environment. 5V power supply, output driver is temperature protected To prevent the short circuit of the battery to ground, at least 110 nodes can be connected.