The Best Smart Smoke Alarms—and Why You Still Need at Least One Dumb Alarm

Every smart smoke alarm I’ve tested has one potentially fatal flaw, trading fewer nuisance alarms for a risky sensor strategy ...
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If your alarms aren’t interconnected, the cheap upgrade that makes a big difference

When a fire starts at the far end of your home, the first alarm to sense smoke is rarely the one outside your bedroom. If your detectors are not linked, you may not hear that first warning until the ...