Car navigation protocol box

1. The car navigation protocol box is a square box connected to the navigation tail line, which realizes the bridge between the trip computer and the navigation information. The navigation installation of the dao must have a corresponding protocol box, otherwise it will be installed. Then there will be failures such as unable to turn off the machine or turn on the machine. Car navigation protocols are similar to password locks. These protocols generally have to be cracked to communicate with navigation. This cracking is the protocol box.

2. Function: It is mostly used in high-end cars to decode the original car's steering wheel control, air conditioning display, door opening information and other functions, so that the navigation will not affect other auxiliary functions of the original car, and realize the realization of hidden functions, such as reversing trajectory and engine Operation information, etc.