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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. 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 ...

4. A23 battery - Wikipedia

   en.wikipedia.org/wiki/A23_battery

   A23 batteries are constructed of eight individual LR932 alkaline button cells enclosed in a wrapper. The A23 battery is close in size to the N battery , which has a voltage of 1.25 V to 1.5 V. It is also similar to the A27 battery , which has the same 12 V nominal voltage and almost the same length but is smaller in diameter by about 20%.

5. Push switch - Wikipedia

   en.wikipedia.org/wiki/Push_switch

   A push switch (button) is a momentary or non-latching switch which causes a temporary change in the state of an electrical circuit only while the switch is physically actuated. An automatic mechanism (i.e. a spring ) returns the switch to its default position immediately afterwards, restoring the initial circuit condition.

6. Nebraska governor recovering from serious injuries after ...

   www.aol.com/nebraska-governor-hospitalized-being...

   Nebraska Gov. Jim Pillen is recovering from serious but non-life-threatening injuries after being bucked off a horse, his office said Monday. Pillen, 68, was initially transported to Columbus ...

7. Service dog helps boy with rare genetic disorder achieve ...

   www.aol.com/dog-helps-boy-rare-genetic-093038800...

   When a 3-year-old New York boy was diagnosed with a rare genetic disorder, hope came in an unlikely form: a golden retriever named Yammy.. Susan Bresnahan’s son, Patrick, was born in 2020 during ...

8. The latest longevity trend? Social wellness clubs - AOL

   www.aol.com/latest-longevity-trend-social...

   Known as the 'Bannister effect,' this phenomenon inspires us to push our limits when we witness others achieve the same goal. Sauna: boosts longevity .

9. Telephone keypad - Wikipedia

   en.wikipedia.org/wiki/Telephone_keypad

   A telephone keypad is a keypad installed on a push-button telephone or similar telecommunication device for dialing a telephone number. It was standardized when the dual-tone multi-frequency signaling (DTMF) system was developed in the Bell System in the United States in the 1960s – this replaced rotary dialing , that had been developed for ...