Ordinary smoke alarms will only do this one thing
Fire safety is a chief concern for homeowners, and smoke detectors perform a vital role in shielding your family. However, smoke detectors have various shortcomings. For instance, they are only able to identify smoke, not heat. When there is a fire in your home, you would not be cautioned until the smoke reaches the smoke detector. Even though there are some other significant signs of fire -- including a sudden rise in heat -- if there's no smoke, you will fail to get a sounding of your smoke detector.
Additionally, smoke detectors only sound the alarm when they detect ample smoke. When a fire begins slowly, you may not be alerted until the flames are out of control. Some smoke detectors utilize dual sensors, which means they will detect smoke from both a raging fire and smoldering remnants. Whenever they do go off, it’s required of the homeowner to contact emergency services after safely leaving the property.