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2. Doorbell - Wikipedia

   en.wikipedia.org/wiki/Doorbell

   Doorbell mechanism from 1884 in Andrássy Avenue, Budapest Antique mechanically operated shop doorbell on a torsion spring. William Murdoch, a Scottish inventor, installed a number of his own innovations in his house, built in Birmingham in 1817; one of these was a loud doorbell, that worked using a piped system of compressed air. [1]

3. Smart doorbell - Wikipedia

   en.wikipedia.org/wiki/Smart_doorbell

   A smart doorbell is an internet-connected doorbell that notifies the home owner on his or her device (smartphone or any other gadget) when a visitor arrives at the door. It activates when the visitor presses the button of the doorbell, or alternatively, when the doorbell senses a visitor with its built-in motion sensors. The smart doorbell lets ...

4. 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]

5. Best video doorbell of 2023 - AOL

   www.aol.com/lifestyle/ding-dong-best-video...

   This doorbell is also notable for its night vision, no-fee operation (all video is stored locally) and package- and person-detection features. ... a built-in siren and a 180-degree field of view. ...

6. Alarm.com's touchless video doorbell is built for the COVID era

   www.aol.com/news/alarm-com-touchless-video...

   Alarm.com claims it has made the first commercially available touchless video doorbell. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: 800-290-4726 ...

7. Ring (company) - Wikipedia

   en.wikipedia.org/wiki/Ring_(company)

   The "Ring Chime" accessory is a unit plugged into a power outlet to play the doorbell's chime. The "Chime Pro" is an extended version that also doubles as a wireless repeater for Wi-Fi networks. [46] In November 2020, Amazon announced the recall of 350,000 Ring doorbells in the United States and 8,700 in Canada due to a potential fire risk. [47]