Wattstopper Fixture Integrated Daylight Dimming Photosensor, 0-10VDC, FD-301

The Wattstopper FD-301 is a fixture-integrated daylight dimming photosensor engineered for closed-loop daylighting control in commercial luminaires equipped with 0-10VDC electronic dimming drivers. The low voltage controller continuously monitors ambient light levels and adjusts fixture output to maintain target illuminance, supporting energy code compliance in daylit spaces such as perimeter offices, classrooms, and retail environments. Its fixture-integrated design simplifies installation and eliminates the need for separate sensor housings in new-construction and retrofit projects.