The ZRS-172 is a part of Carmedia, an open-source vehicle control platform. It is a multiplexer control system for in-vehicle electronics, displays, communication, and multimedia such as radio, TV, and navigation. It is designed to provide a single integrated system that simplifies the installation and integration of all electronic components in the car. The system is capable of connecting up to 8 external devices, each with different functionalities and requirements. It also gives the ability to control all the functionalities through a single, user-friendly interface. With the help of the ZRS-172, users are able to monitor, configure and control their in-vehicle electronic system without requiring any professional assistance.