This is the perfect controller module for connecting multiple source on one monitor!

It can connect to the front camera, rear camera, and an auxiliary source, such as DVD player.

The screen will automatically switch to the backup camera mode once the car is in reverse gear.

During normal operation, it can be switch between different input mode (front camera, rear camera, and aux) by pressing the external switch.  You can also set the timer for the backup camera mode between 15s or 25s.

Power: DC12V
System: PAL & NTSC
Number of Input: 3 (Front camera, rear camera, DVD/AUX)
Number of Output: 1