The tests used in standards for evaluating smoke alarms were developed back in the 1980s. However, despite changes in building materials since then, smoke alarms remain reliable, says Chagger: "They still respond to all the main fires we get today."
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Isis Wu, its president of global residential fire & safety, adds, "In the case of a fire, it'll send you an alert and it'll ask you to confirm before you call out the fire department."