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2. Wireless light switch - Wikipedia

   en.wikipedia.org/wiki/Wireless_light_switch

   Using radio transmission: A radio receiver is typically wired or screwed into a fixture or device, wired or otherwise connected to the electrical system of the building or plugged into an outlet. The radio receiver's memory is programmed by any number of means to respond to certain selected "switches" or (more correctly) remote control ...

3. Sconce (light fixture) - Wikipedia

   en.wikipedia.org/wiki/Sconce_(light_fixture)

   A sconce or wall light is a decorative light fixture that is mounted to a wall. [1] The sconce is a very old form of fixture, historically used with candles and oil lamps. They can provide general room lighting, and are common in hallways and corridors, but they may be mostly decorative. [1] A sconce may be a traditional torch, cresset, candle ...

4. Infrared lamp - Wikipedia

   en.wikipedia.org/wiki/Infrared_lamp

   Remote controls and IrDA devices use infrared light-emitting diodes (LEDs) to emit infrared radiation which is focused by a plastic lens into a narrow beam. The beam is modulated, i.e. switched on and off, to encode the data. The receiver uses a silicon photodiode to convert the infrared radiation to an electric current. It responds only to the ...

5. History of street lighting in the United States - Wikipedia

   en.wikipedia.org/wiki/History_of_street_lighting...

   The earliest street lights in the colonial America were oil lamps burning whale oil from the Greenland or Arctic right whales of the North Atlantic, or from sperm whales of the South Atlantic, South Pacific, and beyond.

6. Ceiling fan - Wikipedia

   en.wikipedia.org/wiki/Ceiling_fan

   Wireless remote control. In recent years, remote controls have dropped in price to become cost-effective for controlling ceiling fans. They may be supplied with fans or fitted to an existing fan. The hand-held remote transmits radio frequency or infrared control signals to a receiver unit installed in the fan. However, these may not be ideal ...

7. Flashlight - Wikipedia

   en.wikipedia.org/wiki/Flashlight

   A set of modern LED flashlights. A flashlight or electric torch (Commonwealth English), usually shortened to torch, is a portable hand-held electric lamp.Formerly, the light source typically was a miniature incandescent light bulb, but these have been displaced by light-emitting diodes (LEDs) since the early 2000s.