Pentatech Additional radio motion detector FD2B

PIR detection range: approximately 5 m x 95°. Additional motion sensor for FD20/FD25. Easy registration at the control unit of the set (sold separately). Comes with wall mount and ball joint. Passive infrared motion sensor (PIR) with Fresnel lens. Transmission range: approximately 70 m (outdoors). A practical all-rounder. The motion sensor can be used to monitor corridors and open doors, to announce visitors or customers, and to oversee rooms. Whether in a house, store, office, or hotel room - the passage sensor is ready for immediate use. Relevant movements are detected using the PIR sensor. A sensor with PIR technology responds to minimal local temperature changes, which it perceives as infrared light with a specific wavelength. This allows it to register people, vehicles, and animals entering the detection area while ignoring swirling leaves or moving branches. It also does not consider fluctuations in general temperature, such as those caused by sunlight. In this way, the system avoids false triggers and ensures reliable detection of relevant objects.