TORK turn-lock photocontrol light sensors meet the most stringent safety and accuracy certifications for reliable use on roadways, bridges and general commercial facilities. Use this light sensor to turn ON road lighting from dusk to dawn. The delayed OFF response prevents false switching from passing headlights and the sensor's UV stabilized polycarbonate housing and window maximizes protection against extreme weather elements and moisture. The molded, sealed, IR-filtered non-drifting silicone sensor provides superior accuracy and is calibrated to duplicate a human eye response. 360 joule MOV surge protection. 105-305VAC, 50/60Hz. Backed by an 8-year warranty and built with components that exceed the 10-year life requirement suitable for HID and most LED fixtures. When a job demands the highest quality light sensors, trust in the reliable name of TORK, a pioneer in the industry since 1922.