4 Wire Audio/Video Intercom System With monitor 

Product Description This is 4 Wire Intercom intercom door phone system, when you install a video doorbell, your monitoring screen can be installed in any corner of the house, and it is convenient for the elderly who do not use smartphones. Of course, the video doorbell also supports the use of monitoring and intercom functions on the phone. This two-way communication is an inexpensive and effective way to talk to strangers at the door without actually opening the door. Outdoor Camera Unit Image Sensor:  1MP CMOS Resolution:  800TVL Light Sensor:  Built-in IR Led:  4pcs, auto on/off Mini Illumination:  0 lux (IR on) Rainproof:  Support Material: Al…

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