- 1Power button ”” : When the system is in the operation state, tap the button to turn the screen on/off, press 3 seconds to turn the system off; After turning off the system, tap the button to turn on again.
 
    - 2Signal switch button ”” : Switch the video source from the front camera to the rear camera (if installed) and vice versa
 
    - 3Menu ”” : Enter menu page and change settings ( In the menu interface, it can be used as the return button)
 
    - 4Scroll up ””
 
    - 5Scroll down ””
 
    - 6Ok button ””
 
    - 7Power cable
 
    - 7.1Power supply
 
    - 7.2Rear view camera plug
 
    - 7.3Front camera plug
 
    - 8Micro SD card slot
 
    - 9Connect cable of front camera
 
    - 10Connect cable of front camera
 
    - 11Mounting holes
 
  
    
    Note: 
    1) To save any settings, please press ""again, and then press "" to save the operation.
    
    2) The Micro SD card should be of class 10 that is compatible with SDXC standard.