0~10V Dimmable

0~10V dimmers are an analog lighting control protocol that applies a voltage between 0 and 10 volts DC to produce a varying intensity level.

Beam Angle

The angular dimension of the cone of light from reflectorized lamps encompassing the central part of the beam out to the angle where intensity is 50% of maximum. Categories from narrow angle to wider angle are Spot, Narrow Flood, Flood, Wide Flood.

Color Rendering Index (CRI)

A measure of the correspondence between the color of an object and its appearance under a light source. CRI>60 or >70 is considered to be not good and CRI >80 is considered to be very good. CRI =100 is equivalent to natural sunlight!

Color Temperature

A specification of the color appearance of a lamp, measured in Kelvin (K). For example: 2200K = “warm white”, 2700 = “soft white”, 3000K = “bright white,” 3500K = “neutral white”, 4000K = “cool white”, >5000K = “natural light”, and >6000K = “daylight”.

Efficacy (Efficiency)

The lamp’s ability to convert electrical power to light output. Simply put, lumens/watts.

Flush Mount

A light fixture that is attached directly to the ceiling with no gap between the light and ceiling.


A Light Emitting Diode (LED) is a semiconductor device that converts electricity into light. Most white light LEDs are coated with phosphors to change the color characteristics of the emitted light.

Lumens (Luminous Flux)

The measure of the perceived power of light, measured in lumens. Simply put, brightness!

PWM Dimming 

Pulse-width modulation (PWM) is a modulation process or technique used in most communication systems for encoding the amplitude of a signal right into a pulse width or duration of another signal, usually a carrier signal, for transmission.

TRIAC Dimmable

TRIAC dimmers are designed for resistive loads such as incandescent or halogen lights and have a significant installed base in the United States and worldwide.


A light fixture that is installed into a hollow opening in the ceiling.

Wall Mount 

A light fixture affixed to a wall in such a way that it uses only the wall for support, and does not have a base on the ground.


A unit of electrical power. Lamps are rated in watts to indicate the rate at which they consume electricity.

CB Scheme 

The IEC CB Scheme is multilateral agreement to allow international certification of electrical and electronic products so that a single certification allows worldwide market access. CB system is the abbreviation for the name of the meaning of “Certification Bodies’ Scheme” i.e, “system certification body.”


Formerly the EC mark, CE is a mandatory conformity for certain products sold within the European Economic Area (EEA).


The DesignLightsConsortium® promotes quality, performance and energy efficient commercial sector lighting solutions through collaboration among its federal, regional, state, utility and energy efficiency.

Energy star

An international standard for energy efficient consumer products originated in the United States.


Recognized as an NRTL in the United States and, in a similar capacity, as a Testing Organization and Certifying Body in Canada by the Standards Council of Canada.


The Federal Communications Commission (FCC) is an independent agency of the United States government, created by Congressional statue to regulate interstate communications by radio, television, wire, satellite and cable.


Short for Directive on the restriction of the use of certain hazardous substances in electrical and electronic equipment.


Is a global independent safety science company with more than a century of expertise innovating safety solutions from the public adoption of electricity to new breakthroughs in sustainability, renewable energy and nanotechnology.


(Sign Accessory Manual) requires UL recognized component certification and is applicable to manufacturers covered under UL’s Listing and Follow-UP Services for Electric Signs.