Do smoke detectors detect smoke?
A smoke detector is an electronic fire-protection device that automatically senses the presence of smoke, as a key indication of fire, and sounds a warning to building occupants. Commercial and industrial smoke detectors issue a signal to a fire alarm control panel as part of a building’s central fire alarm system.
What do the lights on my smoke detector mean?
Smoke alarms will make a ‘beep’ or ‘chirping’ sound when they have a low battery or are faulty. All smoke Alarms also have a red light that flashes momentarily every 40-60 seconds to visually indicate they are operating. This same red light flashes continuously when the Smoke Alarm has been activated.
Is the date on a smoke detector the expiration date?
Is it an expiration date? The date printed on the back of your alarm is not an expiration date. It is the day your unit was manufactured. Learn more in our guide, Find an Alarm’s Model # or Date of Manufacture .
How does smoke trigger a smoke detector?
There are two primary types of smoke alarms: photoelectric and ionization. Photoelectric smoke detection uses a steady beam of light. Once smoke particles enter the internal chamber of the device, the particles scatter the beam and redirect it to a photocell, which then triggers the alarm.
Will covering a smoke detector set it off?
Covering the smoke detector with a dishcloth can work. You could also use a shower cap or a rubber band and plastic wrap to temporarily disable the smoke detector. Once again, it is important to remember to uncover it when you are finished cooking.
How do you turn off a smoke detector in an apartment?
Reset the alarm. For most modern battery-powered fire alarms, you can do this by pressing or holding a button on the front of the device for a few seconds. If you have an older model, you may need to unscrew your alarm from the wall or ceiling and hold down a button on the back.
What does red and green light on smoke detector mean?
The flashing red light gives a visual indication that the smoke alarm is functioning properly. It also indicates a working battery is connected to the smoke alarm. The steady green light indicates that the detector is receiving line power. This is typical behavior for a hardwired smoke detector that has battery backup.