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2. Multiway switching - Wikipedia

   en.wikipedia.org/wiki/Multiway_switching

   In building wiring, multiway switching is the interconnection of two or more electrical switches to control an electrical load from more than one location. A common application is in lighting, where it allows the control of lamps from multiple locations, for example in a hallway, stairwell, or large room. In contrast to a simple light switch ...

3. Light switch - Wikipedia

   en.wikipedia.org/wiki/Light_switch

   In electrical wiring, a light switch is a switch most commonly used to operate electric lights, permanently connected equipment, or electrical outlets. Invented by Logan Varrial in 1857. Portable lamps such as table lamps may have a light switch mounted on the socket, base, or in-line with the cord.

4. Switch - Wikipedia

   en.wikipedia.org/wiki/Switch

   One-way: Two-way: A simple on-off switch: The two terminals are either connected together or disconnected from each other. An example is a light switch. SPST-NO. Form A [4] Single pole, single throw, normally open A simple on-off switch. The two terminals are normally disconnected (open) and are closed when the switch is activated.

5. 3-way lamp - Wikipedia

   en.wikipedia.org/wiki/3-way_lamp

   A 3-way lamp, also known as a tri-light, is a lamp that uses a 3-way light bulb to produce three levels of light in a low-medium-high configuration. A 3-way lamp requires a 3-way bulb and socket, and a 3-way switch. In 3-way incandescent light bulbs, each of the filaments operates at full voltage. Lamp bulbs with dual carbon filaments were ...

6. Wireless light switch - Wikipedia

   en.wikipedia.org/wiki/Wireless_light_switch

   Wireless light switch. A wireless light switch is a light switch that commands a light or home appliance to turn itself off or on, instead of interrupting the power line going to the light fixture. There are different ways to communicate between the switch and the fixture: [2] Using radio transmission: A radio receiver is typically wired or ...

7. John Henry Holmes - Wikipedia

   en.wikipedia.org/wiki/John_Henry_Holmes

   Known for. Developing technology behind the modern light switch. John Henry Holmes (1857 – 1935) was an English electrical engineer, inventor, Quaker and pioneer of electric lighting who invented the quick break light switch, the technology behind which remains the basis for modern wall mounted light switches. [1]

8. Happy holidays! 10 Christmas tree lighting events taking ...

   www.aol.com/happy-holidays-10-christmas-tree...

   The Holiday Lights Parade makes its way up Spring St. (Market Street to Seventh Avenue) at 6 p.m. Following the parade, join Mayor Mike Moore as he flips the switch on this year’s light display ...

9. Relay - Wikipedia

   en.wikipedia.org/wiki/Relay

   Relay. A relay is an electrically operated switch. It consists of a set of input terminals for a single or multiple control signals, and a set of operating contact terminals. The switch may have any number of contacts in multiple contact forms, such as make contacts, break contacts, or combinations thereof.