November 25, 20205 yr comment_18581 My Ei151 ionisation smoke alarm is 25 years old. About 10 years ago I renewed the batteries. It has now started spontaneously going off, for no reason. When I press the test button all appears to be working correctly. Any advice would be appreciated Report
November 26, 20205 yr comment_18592 Hi, smoke alarms should be replaced every ten years, as beyond that the sensors start to deteriorate. So you were lucky so far. Harry Report
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