Automatically turns on lights or appliances when motion is detected. Automatically turns off after motion stops (adjustable anywhere between 30 seconds and 2 hours). Optional night-only mode keeps lights from turning on during the day. Adjustable high/low motion sensitivity provides flexible placement. Adjustable day/night threshold. Optional dusk/dawn lighting control using a built-in photocell 40 feet detection range with up to 110° arc, Tecus technology provides superior performance and reliability,