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TL;DR: Keep up with everything that goes on at your door with the Ring Video Doorbell 3 for $179.99, a $20 savings as of Aug. 11. If you don't already own a home security system, now's the time.
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]
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One of the earliest smart doorbells that entered to the market is the Ring Video Doorbell which was created by entrepreneur Jamie Siminoff in 2013. Since then, several more smart doorbells have been introduced to the market, some of them with additional, unique features. Another major one is Nest Hello. [3] [4] [5] [6]
These were single-stroke bells: applying current to an electromagnet pulled the bell's clapper against the bell or gong and gave one chime. The bell did not ring continuously, but only with a single ring, until current was applied again. To sustain the tone, these bells were usually much larger than are used today with interrupter bells.
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