The PIR41 includes three sensitivity detectors and an integrated circuit to save energy and offer practical functions. The PIR41is designed to automatically turn lights on when motion and body heat is detected. The sensor uses the infrared energy from humans as a control-signal source; the load is activated as soon as one enters the detection field. It includes a day/night sensor to easily identify between day and night, and it is easy to install. Application: Major Tech PIR Sensor is ideal for homes, offices and hotels Features : 360° Detection Field 3 Detectors Automatically turns on lights when motion and body heat is detected 3 – 2000 LUX (Adjustable) Installation height 2.2 – 4m Identify day and night automatically Time-delay and ambient light adjustment Detection distance 12m (max) Power consumption 0.5W Detection moving speed 0.6 – 1.5m/s