OCT-ASTOR Rotating Head Infrared Sensor is a cost-effective motion detector that enables you to take additional precautions against theft and burglary. This motion sensor detects movement in a room up to 15 meters away for 180 degrees, so it is easy to install and does not have to be constantly monitored. It switches off immediately when the movement stops and turns on when it is detected again. The integrated light control helps you save energy during the day and gives you added safety during the night.