Color Video Door Phone :::

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	Model: PHONE-COLOR-512 Display:4-inch flat type color CRT Monitor Resolution:400 TV Lines Door opening function (door opener is optional) Audio/Video output Prevent teardown warning With infrared night vision
	Model: PHONE-COLOR-VCT501 Surface-mounted installation Hands-free communication Unlocked by electrical-control lock Call guard unit in times of emergency Multi-ringing tones selectable Can set to 'non-disturb' Do the monitoring and secondary confirmation
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