NLPIP Specifier Reports: Photosensors

A photosensor is an electronic control device that adjusts the light output of a lighting system based on detected iluminance. While some photosensors simply switch lights on and off, this report focuses on photosensors that are used with dimming electronic ballasts to adjust the light output of fluorescent lighting systems over a continuous range. These photosensors are most commonly used in daylight applications to dim electric lighting when total illuminance exceeds a preset level.

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