... energy saving 2.Automatically work 3.Long work life.... LK-SA-PH-STD-P1infrared sensor switchSensor SwitchThe human body is an ... : school, hospital, hotel,house,public places etc.Specification: ModelLK-SA-PH-STD-P1MaterialPCOperating VoltageAC 220V Switching Capacity(W)2000WWeatherproofIP44Detection Range ... ,but also make modern life comfortable and fun!!! LK-SA-PH-STD-P1infrared sensor switch