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  2. Intercom - Wikipedia

    en.wikipedia.org/wiki/Intercom

    Encrypted wireless intercoms can reduce or eliminate privacy risks, while placement, installation, construction, grounding and shielding methods can reduce or eliminate the detrimental effects of external interference. The United States and Canada have several frequency ranges for wireless intercom systems and other wireless products.

  3. Clear-Com - Wikipedia

    en.wikipedia.org/wiki/Clear-Com

    Clear-Com is a manufacturer of electronic intercom products, widely used to enable stage management and crew communications in theatre, filmmaking, video and television production, concerts, professional sports competitions, special events and audiovisual presentations.

  4. Wireless intercom - Wikipedia

    en.wikipedia.org/wiki/Wireless_intercom

    Such systems work similarly to normal wired intercom designs, with intercom stations using wires to connect to electrical outlets in rooms. This method of intercom connection is most useful in offices and homes served by a single electrical service. Products are available from a variety of manufacturers including Westinghouse and GE. [6] [7]

  5. NuTone - Wikipedia

    en.wikipedia.org/wiki/NuTone

    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]

  6. Do Ring video doorbells work without a subscription? - AOL

    www.aol.com/news/ring-video-doorbells-without...

    Owned by Amazon, Ring is best known for its video doorbells, but also produces a range of indoor and outdoor security cameras, along with intercoms and even entire security systems, complete with ...

  7. Commend International - Wikipedia

    en.wikipedia.org/wiki/Commend_International

    In the early 2000s, Commend introduced OpenDuplex as a further development of full duplex speech transmission technology. [2]In 2012 Commend ventured into virtual server technology with a software-based Intercom server, marketed under the name "VirtuoSIS".

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