You'll have some folks come along in a mo to tell you the smoke alarm downstairs going off didn't wake them when they were sleeping on the top floor. Whether 'connected' smoke alarms means 'smart' IDK, but on balance it seems like a good idea to have all of them go off if one of them does. This should be a feature of £9.99 smoke alarms, but it isn't.
You'll have some folks come along in a mo to tell you the smoke alarm downstairs going off didn't wake them when they were sleeping on the top floor. Whether 'connected' smoke alarms means 'smart' IDK, but on balance it seems like a good idea to have all of them go off if one of them does. This should be a feature of £9.99 smoke alarms, but it isn't.