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2. Joel Spira (businessman) - Wikipedia

   en.wikipedia.org/wiki/Joel_Spira_(businessman)

   Known for. invention of the first solid state-electronic dimmer and founder of Lutron Electronics Company. Joel Solon Spira (March 1, 1927 – April 8, 2015) was an American inventor, entrepreneur, and business magnate . He invented a version of the light- dimmer switch for use in homes around the United States and led his Lutron Electronics ...

3. Ruth Rodale Spira - Wikipedia

   en.wikipedia.org/wiki/Ruth_Rodale_Spira

   In 1961, she co-founded Lutron Electronics, a lighting company, with her husband, who is credited with inventing the solid-state dimmer switch. She was Lutron's co-chair, and headed the company's marketing department from 1982. In 1973, the Spiras founded another company, Subarashii Kudamono, to grow Asian pears in the Lehigh Valley.

4. Leviton - Wikipedia

   en.wikipedia.org/wiki/Leviton

   Leviton Manufacturing Company, Inc. is an American manufacturer of electrical wiring equipment in North America. It produces electrical light sockets, receptacles and outlets, switches, dimmers and other lighting control systems, wire, power cables, power cords, wall and ceiling occupancy sensors, wall plates, datacom, and other electrical products.

5. Dimmer - Wikipedia

   en.wikipedia.org/wiki/Dimmer

   Dimmer. A dimmer is a device connected to a light fixture and used to lower the brightness of the light. By changing the voltage waveform applied to the lamp, it is possible to lower the intensity of the light output. Although variable-voltage devices are used for various purposes, the term dimmer is generally reserved for those intended to ...

6. Talk:Lutron Electronics Company - Wikipedia

   en.wikipedia.org/wiki/Talk:Lutron_Electronics...

   Joel Spira obituary[ edit] Joel Spira, co-founder of Lutron, died on Wednesday, April 8, 2015, according to an Associated Press report at Fox News, filed on April 9, 2015 (UTC). He was 88, so that would make his birth date circa 1926.

7. Lighting control system - Wikipedia

   en.wikipedia.org/wiki/Lighting_control_system

   A lighting control system incorporates communication between various system inputs and outputs related to lighting control with the use of one or more central computing devices. Lighting control systems are widely used on both indoor and outdoor lighting of commercial, industrial, and residential spaces. Lighting control systems are sometimes ...