Regular smoke alarms will only do one thing
Protecting your home from fire is important, and smoke detectors take on a vital role in shielding your family. Despite that fact, smoke detectors have various shortcomings. For example, they are only able to detect smoke, not high temps. In the event there is an emergency in your residence, you may not be warned before the smoke ascends to the smoke detector. While there are additional significant indications of fire -- including a marked increase in warmth -- if there’s a lack of smoke, there is no triggered smoke detector.
Additionally, smoke detectors only activate if they find an adequate amount of smoke. When a fire starts small, you may not be cautioned until it's too late. Many smoke detectors employ dual-sensor technology, which means they will detect smoke from both a blazing inferno and a more gradual burn. Then when they do go off, it falls to the resident to contact the fire department after exiting the premises.