Automatic front view when staring:When the engine is started, the system activates the monitoring machine and the front camera to check the front view for 8 seconds then turn it off. Automatic rear view: When you pull in reverse, the system is activated by the monitor as is the rear view camera. It then switches to the front view of the video camera in 15 seconds, then stops. Front view always activate mode:Push the control switch to enter the front mode.In this mode, the system will monitor and activate the front of the camera at all times.Exit the mode by pressing the control switch again. Working priority: ,Front view camera: presented by the remote control system.Rear view camera: submitted by the control system or can be activated by being in reverse. Power: max: 50MA, 12V. System signal: PAL / NTSC Video output: 1.0VPP / 75ohm Operating temperature: -20 to 80 Colour:black Material:ABS Package Contents: 1 x Parking Camera Video Control System Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.