Lutron Electronics Company, Inc. -- Dimmers, Switches, and Lighting Controls for Home and Commercial Applications  
 
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Glossary
Derating - Reducing the capacity of a control when multiple dimmers are installed in the same back box or under the same frame.

Electronic low-voltage – Track lights are usually electronic low voltage. Control these lamps with electronic low-voltage (12v) dimmers only.

Fade time - The time it takes all zone/channels to fade from one lighting scene to another with all zones/channels arriving at the next scene at the same time.

Gang Single-gang - one control mounted in a single wallbox.

IR (Infra Red) - Type of remote control technology.

Multigang - two or more controls mounted side-by-side in a series of connected wallboxes.

Magnetic Low-Voltage – Recessed lights are often magnetic low voltage. Magnetic low voltage lights tend to be larger and heavier than electronic low voltage.

Multi-location dimming - Allows full-range dimming from two to ten locations.

Preset Dimmer - Preset dimmers have a built-in on/off switch that allows the user to turn lights on to a pre-selected light level.

Radio frequency interference (RFI) - An audible buzz or noise in some sensitive audio and radio equipment caused by the dimmer's rapid current switching in conjunction with sharp current rise.

Raise/lower Controls - An actuator (slider, rocker, toggle, paddle, etc.) which when engaged increases or decreases the intensity of light controlled, then returns to its normal place of rest after disengaging.

Scene - The lighting effect created by adjusting several zones/channels of lighting to the desired intensity.

Single pole - A single pole dimmer provides full-rangedimming from one location only.

Slide-to-off dimmer - Slide-to-off models have an on/off switch activated at the bottom of the linear slide travel.

2-way - 2-way dimming control allows dimming or switching from one location (using a 2-way dimmer) and on/off switching from a second location (using a 2-way switch).

Two-location dimming - Allows full-range dimming from two different locations.

Wallbox Dimmer - A self-contained dimmer that fits into a wallbox.

Zone - A fixture or group of fixtures controlled simultaneously as a single entity.

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