LIN (Local Interconnect Network) is a serial protocol used in automotive electronics to allow microcontrollers to communicate with low-speed peripherals. The standard was defined by the LIN Consortium, a group of five vehicle manufacturers. It uses a single wire pair with a master-slave topology, offering lower cost, reliability and data rates than CAN – hence its use in non-critical, low-speed applications.

Examples of LIN might include commands from a comfort control unit to an electric sunroof motor, windscreen wiper or heater motor functions. 

PicoScope's serial decoding feature can decode LIN bus messages.