Note: When you receive backup camera, please refer to below steps to pair it to V25 system within 4ft. 1: press + button switch to the correct channels you want to pair (CH1 or CH2) 2 : Make sure the camera and monitor are powered . 3 : Presses the “Menu'' button of the monitor into menu mode until the “ Pair ''appear on the monitor ,then press the ''+'' button to pair the signal . 4 : After “pairing”Countdown icon appears on the screen, you need to restart (turn off the camera and reconnect it immediately) the camera. 5: waiting for few seconds the image appear