The optical radio smoke detector Abus RWM450 triggers an alarm as soon as smoke particles enter the measurement chamber. Additionally, it features a built-in radio module that automatically relays the alarm to other RM450 smoke detectors. This model is particularly suitable for large apartments or houses, where the alarm from a single smoke detector could easily be overlooked. Up to 14 radio groups can be linked, each with up to 15 smoke detectors. It covers areas of up to 60 m² at the appropriate installation height and warns loudly at 88 dB of dangerous smoke development, as well as, thanks to the integrated temperature sensor, when there is a noticeably rapid increase in room temperature. This allows you and your family or housemates to evacuate safely in case of a fire. Thanks to the magnetic gel adhesive pad technology, the smoke detector can be installed in no time and requires no drilling or screws for fixation. The high-quality, permanently installed lithium battery ensures a long battery life of the RWM250 of up to twelve years. When the lithium battery's power is low, a beep sounds as a warning.