Infrared motion sensor for ceiling installation. Detection range of up to 9 m (diameter). Detection angle: 360°. Robust relay (300 W LED). Operating temperature: -10 °C to 40 °C. Master function. Detects relevant movements using a PIR sensor. The sensor with PIR technology - PIR stands for passive infrared - responds to minimal local temperature changes that it perceives as infrared light with a specific wavelength. It registers people, vehicles, and animals entering the detection area while ignoring swirling leaves or moving branches. It also disregards fluctuations in general temperature, such as those caused by sunlight. This way, the motion detector avoids false triggers and ensures reliable detection of relevant objects.