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Large houses must have several alarms. It is not certain that one alarm is enough in your home.
A small home must have one smoke alarm located in the hallway - if you can drive it in all rooms. If you have a larger home, there should be several smoke alarms set up in the bedrooms and the living room. At the same time, there should be at least one alarm on each floor.
We recommend that you test your smoke alarms once a month and that you test them if you have been away for a long time, where the batteries may have run out without you having heard the warning sound. You test your alarm by pressing the test button.