Ordinary smoke alarms can only do one thing
Protecting your home from fire is a chief concern for homeowners, and smoke detectors play a critical part in keeping your family safe. Despite that fact, smoke detectors have some limitations. To illustrate, they will only react to smoke, not extreme temperatures. When there is an emergency in your house, you would not be cautioned until the smoke reaches the smoke detector. While there are additional unmistakable indications of fire -- such as a marked heat increase -- if you don’t have smoke, there is no triggered smoke detector.
What’s more, smoke detectors only sound the alarm if they find ample smoke. If a fire begins slowly, you may not be alerted until the flames are out of control. Many smoke detectors utilize dual-sensor technology, meaning they will recognize smoke from both roaring flames and something less intense. Then when they sound their alarm, it's up to the homeowner to notify the fire department after they safely leave the property.