1When car engine starts, the system will activate the car monitor and the all the camera around one by one to check the view around for 10 seconds, then turn off. 2The system start with front view mode as default. Front view controlled by switch(included) and you can shut off the front view video by repress the control switch for 2 seconds. 3Press the control switch for 2 seconds, car monitor and car front view camera will be working all the time, if no other trigger working, more convenient to use. 4Press the control switch less than 1 second to enter side view mode. When you turn on the turning switch, this system will activate monitor and side view camera (controlled by left/right steering lamp). 5The monitor and camera will turn off after 1.5 seconds when steer turning is finished. Press the control switch less than 1 second again to enter front view mode.