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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 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 ...
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]
A public address system (or PA system) is an electronic system comprising microphones, amplifiers, loudspeakers, and related equipment. It increases the apparent volume (loudness) of a human voice, musical instrument, or other acoustic sound source or recorded sound or music.
The term music centre came into common use when all-in-one integrated systems, also known as shelf stereos or mini component systems, became popular. "Midi"-style systems (mimicking the appearance of a stacked component-based system) were popular during the 1980s. These typically included a record deck, tuner, dual cassette deck, amplifier and ...
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 ...
Multi-room audio (distributed audio) systems are audio systems that allow for playback and often control of music throughout an entire home or building. Numerous commercial systems provide this function, or a system can be custom built or homemade.
The product line of Clear-Com has expanded beyond party-line wired units to include multi-channel intercoms and wireless technology. Clear-Com patented a multi-channel wired digital intercom system in 2009, used in the HelixNet product line. The company's FreeSpeak wireless intercom was nominated in 2020 for a TEC Award. [7]