Door entry videophone
Video call for a front door in an apartment. Video door phone. : Door Entry Videophone
Quote from Article entitled Video call for a front door in an apartment. Video door phone.:
The monitor is usually fixed to the front door. It can be colored or black and white, equipped with a tube and/or a loudspeaker dynamic and have a couple of buttons to control the device. With the help of it, in addition to the installation of custom settings, you can see what is happening at the site in front of the door; turn on or off record, and watch video and photo files. Expensive models are connected with the computer or TV, so the image can be displayed on their screen.
The full version of the article can be found here.