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Video door phone indoor terminal.. Going a little further in time, we find video door phones featuring a video installation apart from the classical audio. 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.
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 ...
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]
A 1980s Mirtone intercom system. Mirtone was founded by Manuel Mira in the early 1960s. The company started out manufacturing apartment intercoms in Toronto. The company expanded and started producing fire alarm systems and became the 2nd largest fire alarm manufacturer in Canada. Mirtone was bought by General Signal in 1988. [2] [3]
NuTone is an American company that manufactures products mainly for residential use, including doorbells, intercom systems, indoor air quality products, ventilation systems, range hoods, ceiling fans, built-in electric heaters, ironing equipment, and home theater systems. The company was founded in 1936 by J. Ralph Corbett in Cincinnati, Ohio. [1]
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 ...
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.
[4] [5] At the time, the company sold and installed security systems. [4] APX Alarm Security Solutions rebranded as Vivint in February 2011. [4] [6] Vivint was acquired by The Blackstone Group in November 2012. [7] The company launched Vivint Solar, a solar energy company, in 2011. [8] Vivint Solar went public in October 2014 and was later ...
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