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A video door-phone (also known as a video door entry or video intercom) is a stand-alone intercom system used to manage calls made at the entrance to a building (residential complex, detached family home, workplace, etc.) with access controlled by audiovisual communication between the inside and outside. The main feature of video door entry is ...
In these cases, the intercom plate has the same structure as the previous version but features a video monitor connected to a surveillance camera that allows inspecting the person who pressed the button and part of the surrounding area. [2] Access control systems. Some manufacturers have also adopted the possibility of opening the door via a ...
1980s MirTone intercom system. An intercom, also called an intercommunication device, intercommunicator, or interphone, is a stand-alone voice communications system for use within a building, small collection of buildings or portably within a small coverage area, which functions independently of the public telephone network. [1]
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Control4 is a brand of automation and networking systems for homes and businesses, offering a customizable and unified smart home system to automate and control connected devices including lighting, audio, video, climate control, intercom, and security. [1]
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Using an intercom telephone, administrators can make announcements over loudspeakers that are heard by the entire building, but they can also call a specific classroom's intercom by dialing the room number of that classroom. Intercom telephones can be interfaced with a building's access control system.
There are many types of wireless intercom systems on the market. Most wireless intercom systems communicate by radio waves using one of the frequencies allotted by various government agencies. Some wireless intercom systems communicate using the 802.11 standard. [1] There are also systems that advertise themselves as wireless, but communicate ...
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