Ordinary smoke alarms can only do this one thing
Fire safety is a crucial consideration, and smoke detectors play a vital part in safeguarding your family. Despite that fact, smoke detectors have various drawbacks. To illustrate, they will only detect smoke, not high temps. If there is an emergency in your house, you might not be warned before the smoke rises to the smoke detector. While there are additional unmistakable indications of fire -- like a sudden heat increase -- if there's no smoke, you won’t have a sounding of your smoke detector.
In addition, smoke detectors only sound the alarm if they detect ample smoke. If a fire begins slowly, you may not be warned until the flames are out of control. Some smoke detectors employ dual sensors, meaning they will recognize smoke from both roaring flames and smoldering remnants. Whenever they start beeping, it falls to the homeowner to call first responders after they safely leave the property.