The optical radio smoke detector Abus RWM450 triggers an alarm as soon as smoke particles enter the measurement chamber. Additionally, it features an integrated radio module that automatically transmits 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 room temperature rises rapidly. This allows you and your family or housemates to evacuate safely in the event of a fire. Thanks to the magnetic gel adhesive pad technology, the smoke detector can be installed in no time and does not require any drilling or screws for fixation. The high-quality, permanently installed lithium battery allows for a long battery life of the RWM250 of up to twelve years. When the lithium battery is running low, a beep sounds as a warning.