The Tork 2021 swivel thermal type photocell is a great choice for use in patio lights, security lights, and decorative lighting control. It is ideal for applications that require the photocell in an exact direction to sense natural light, but avoid artificial light. Measuring only 1.625 inches wide and 4.125 inches in length, the unit controls 2000 watts of Tungsten lighting and works on 120 volt systems. The 1/2-inch conduit mounting and the 180 degree swivel capability make it easy to install and connect while the Lexan housing is both impact and vandal resistant. Functioning in temperatures from -40 degrees to 140 degrees Fahrenheit, this photo control also features a delay of up to two minutes to prevent false switching due to car headlights and lightning and three 6-inch color coded leads. UL rated for LED.