Maxlite SC-SWSDU-W Single Relay Pole Wall Switch PIR/Ultrasonic SensorMaxLite SC SWSDU W SC SWSDU W Product Description The SC Series wall switch sensor provides a simple and cost effective standalone control solution which utilizes PIR (Passive Infrared) technology to turn lights ON and OFF based on occupancy vacancy. The vandal resistant lens provides major and minor detection movement coverage with a 180 sensor field of view. The sensor wall switch can be used to meet many of the Title 20 24, ASHRAE 90. 1, and IECC