Photocells offer increased control and energy savings for your light fixture. Most commonly mounted directly to a light fixture. photocells will automatically turn the fixture on/off depending on ambient light levels. Photocell controllers. when in installed properly, can help achieve California Title 24 compliance.
Button photocells are mounted inside an enclosure or a luminaire, typically through a standard knock-out, with only a small portion of the photocell visible when installed.
Stem photocells are installed into an enclosure or a luminaire and protrude outside the light fixture