... time to start.2. Q: When will the video phone turn off automatically and enter standby mode if it ... thickness of the door should be to install the video phone?A: 35mm ~ 55mm,65~85mm,85~105mm.Part ... machine, please turn on the video switch first, and turn on the speaking switch after the image turn out.Please ... the indoor and outdoor hosts.Turn off the video each time you finished a conversation, this can ...