Connectable Wireless Smoke Alarm - 

The networkable smoke detector with built-in battery (3V lithium battery) ensures constant functional reliability. Up to 40 fire detectors can be wirelessly networked and thus ensure maximum safety in living rooms, care facilities, retirement homes, hospitals, kindergartens, etc., as all persons in multi-storey buildings can be warned in good time. You can fulfil the minimum protection by installing a smoke alarm in every bedroom and children's room as well as in all corridors that serve as escape routes. Thanks to the high-quality housing, it has increased stability, e.g. against external influences. You don't need an internet or app to use the networked smoke detectors, so using them is no problem even for older people.