A fixture that directs all light down.

The term for the power supply that operates an LED lighting system.

A plug-in convenience receptacle for two plugs.

Lamp efficacy is total lumen output divided by total watts consumed and is expressed Lumens Per Watt (LPW). Measures the energy efficiency of a light source.

Energy Independence and Security Act of 2007. Law specifying the minimum efficiency of popular lamps and ballasts, including general service incandescent and linear fluorescent lamps, reflector lamps, and HID Ballasts.

Dimmer that uses a solid-state switch (Triac) to turn off the current at a very high frequency and so reduce lamp output.

Solid state relay in a wall box that accepts control signals, provides on/off control as part of a multi-scene or central control system.

Takes 120 Volts (line voltage) to 12 Volts (low voltage) using electronic switching rather than magnetic windings. Require special dimmers.

Recessed fixtures enclosed at the bottom by a lens or diffuser. Produce medium beam spread.

A program of the US Department of Energy and the Environmental Protection Agency. Qualifies lighting equipment and other appliances in terms of energy efficiency.