LIN Bus (Local Interconnect Network) is a simple serial bus that was originally developed for use in vehicle electronics, but is also used by AXA electric window motors.
The LIN bus serial adapter module allows you to connect your computer or microcontroller to a LIN Bus as the bus master, so that it can send messages to other devices on the bus and receive their responses. One side has a connector in the common “FTDI cable” format, so you can plug in a USB-to-serial converter and be ready to go. The other side has a 6P6C RJ12 connector that matches the connectors on AXA electric window motors.
For more information, see the LIN bus serial adapter module project page.