The Westgate Mfg PC-2SU is a pencil swivel photocell designed for universal outdoor lighting applications requiring automatic dusk-to-dawn control across a wide voltage range. Rated for 120277V AC and 500W, the swivel design allows the sensor to be aimed for optimal ambient light detection regardless of fixture orientation. Backed by a 7-year warranty, this black photocell is a reliable choice for area lights, wall packs, and site lighting installations.