The Ei Electronics Ei650RF wireless smoke detector operates with a radio module that alerts all connected detectors simultaneously in case of danger. This ensures comprehensive safety coverage. The Ei650RF is particularly suitable for use in bedrooms and children's rooms, as it does not have any disturbing acoustic or visual signals in normal operating mode. It features false alarm protection and a large test/silence button. A built-in battery, screws, dowels, and a manual are included in the delivery. With a diameter of 119.5 mm and a weight of 210 g, the detector is compact and lightweight.