You'll be able to depart that to us. ADT smoke and heat detectors are regularly monitored, so we will Permit you know once the battery requires replacing. Our all-inclusive provider plan, which comes as typical, covers you for substitute batteries, callouts and labour for virtually any issues, like accidental destruction. https://www.firesense.co.uk/type/addressable-fire-system/addressable-fire-alarm-control-panels/