CAN Bus is an abbreviation for Controller Area Network BUS. The CAN Bus protocol refers to the communication between the different control units in a car or truck - where the control units (computers) can exchange information directly (without a connection unit between them). This is a protocol based on the principle of messages, and each message has its own electronic structure. The device can transfer all information or the computer network to the system through this medium of devices at high speed and display it on the dashboard, such as oil pressure, gasoline, temperature, etc., and all the information shown on the car's dashboard.