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Lighting Terminology




The use of a specific lighting fixture that is best suited for the task or the environment that requires lighting.


A power source for HID or Fluorescent products that provides starting voltage and regulates the operating current.


An output device that converts electric energy into light.

Lamp Life

A rating that is based on the assumption that 50 percent of the lamps, on average, are expected to remain burning at the number of hours indicated.


A unit of measurement of light emitting from a lamp or light fixture.


A measurement of power consumption.


The level of electric pressure in the system. Note: Please verify voltage for your specific application prior to ordering light fixtures.

High-Intensity Discharge (HID) Lamp

An electric discharge lamp in which light is produced under pressure.  It requires a ballast to operate.  Metal Halide (MH) and High-pressure sodium (HPS) are two common types of HID lamps.

Metal Halide (MH) Lamp

A HID lamp in which light is produced through the energizing of metal halides in a pressurized arc chamber.  It requires a ballast to operate and produces a white light with good lamp life and good CRI.

High-Pressure Sodium (HPS) Lamp

A high-intensity discharge lamp in which light is produced through the energizing  of sodium vapor in a pressurized arc chamber. It requires a ballast to operate and produces a yellow/orange light with very good lamp life and poor CRI.

Quartz Halogen Lamp

An incandescent lamp containing halogen gases that operate at a very high temperature.  This results in more light output than a standard incandescent lamp. Quartz halogen lamps provide a bright white light with high CRI but short lamp life.

Fluorescent Lamp

A low-pressure electric-discharge lamp where the electric discharge generates light.  It requires a ballast to operate and provides great energy efficiency and good CRI.

Color Rendering Index

A rating system that indicates how colors appear under a given light source (lamp) on a scale of 100.  The higher the CRI number, the more accurately the object's color is represented.  The lower the CRI number, the less accurately the object will be represented.

Lamp Output

The amount of light expressed in lumens that a lamp source produces.  All e-conolight lamp lumen data is based on initial lamp lumens.

Lamp Color

A measurement in Kelvin (K). Light sources with a lower Kelvin temperature (2000-3000K) exhibit more orange light (warmer).  The higher Kelvin temperatures (>5000K) will exhibit more blue light (cooler).  Fluorescent (2700K), quartz halogen (2800K), and metal halide (4000K) lamps produce an impression of "white light."


A light-sensing device that automatically switches the light fixture off when daylight is present and activates at dusk.

Fixture Weight

The weight listed for all e-conolight products includes the fixture, the lamp and its packaging.


All e-conolight products are constructed with a sturdy, aluminum die-cast housing.


All e-conolight products include a high-quality, aluminum reflector for optimum performance.

Par 20 Electronic

PAR20 Electronic maximizes beam performance using 20 watts (37%) less energy than standard halogen 50W lamps. It consists of a low voltage halogen burner and integrated transformer in the PAR20 envelope.

ETL vs. UL

Like the UL Mark, the ETL Listed Mark shows that our product has been independently tested by a Nationally Recognized Test Laboratory (NRTL) and that it has met the minimum requirements of widely accepted product safety standards.