installed in a standard electrical wall box while saving energy.

In 1966, Eugene Alessio patented a light bulb socket adapter for adjusting the light level on a single light bulb using a TRIAC. To house this device, he decided on a 2 in round device with one end capable of being screwed into a light bulb socket and the other end able to receive a light bulb.

When solid-state dimmers came into use, analogue remote control systems (such as 0-10 V lighting control

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