Amount of power consumed by a luminaire. Key factor in energy usage, fixture selection, and compliance with efficiency standards

Input voltage a fixture can accept, often listed as universal (120–277V) or high voltage (347–480V), allowing flexibility across facilities and regions

Measure of distortion in electrical current drawn by a luminaire. Lower THD reduces interference with other equipment on the electrical system

Measure of how effectively a luminaire converts electrical power into usable output. High power factor reduces wasted energy and lowers electrical system strain in industrial facilities

Total visible light emitted by a fixture, typically measured after photometric testing. Determines how much usable illumination reaches the work area

Standardized photometric data file created by the Illuminating Engineering Society (IES) that models light distribution for use in lighting design software

Rapid variation in light output that can cause eye strain or safety issues. Quality industrial luminaires are designed to minimize flicker

Measure of how efficiently a luminaire converts power into visible light. Higher efficacy means more light with less energy consumption, improving sustainability and lowering operating costs