Traditional smoke alarms will only do this one thing
Protecting your home from fire is important, and smoke detectors take on a critical part in shielding your family. Despite that fact, smoke detectors have their drawbacks. For example, they are only able to react to smoke, not high temps. When there is a fire in your home, you might not be cautioned before the smoke ascends to the smoke detector. Although there are further telltale signs of fire -- including a marked increase in warmth -- if there's no smoke, there is no warning from your smoke detector.
In addition, smoke detectors only sound the alarm if they encounter an adequate amount of smoke. If a fire creeps along slowly at first, you may not be cautioned until the situation is out of hand. Many smoke detectors use dual-sensor technology, meaning they will detect smoke from both roaring flames and a more gradual burn. If they start beeping, it's up to the homeowner to contact emergency services after they safely leave the property.