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2. Do smart video doorbells need a chime to work properly? - AOL

   www.aol.com/news/smart-video-doorbells-chime...

   Many video doorbells can optionally be powered by the wiring of your existing chime, but doing so will likely remove the chime’s original function. Show comments Advertisement

3. Smart doorbell - Wikipedia

   en.wikipedia.org/wiki/Smart_doorbell

   The smart doorbell lets the home owner use a smartphone app to watch and talk with the visitor by using the doorbell's built-in high-definition infrared camera and microphone. They can be either battery operated or wired. [1] Some smart doorbells also allow the user to open the door remotely using a smart lock. [2]

4. The 5 best battery-operated video doorbells that don't need ...

   www.aol.com/lifestyle/5-best-battery-operated...

   Video doorbells add an extra layer of security to your home. These battery-operated video doorbells don't need any wiring to work. The 5 best battery-operated video doorbells that don't need wiring

5. 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]

6. 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]

7. Video door-phone - Wikipedia

   en.wikipedia.org/wiki/Video_door-phone

   Video door entry consists of both outside and indoor elements: an outdoor panel on the outside, an electronic lock release, and an indoor monitor. The outdoor panel or street panel is installed beside the entrance door or gateway and incorporates different elements ready for use in any climate conditions: one or several pushbuttons to make the call (usually one per home or apartment), a micro ...