To temporarily silence a First Alert smoke alarm, press the Test/Silence button located on the center or side of the unit. This mutes the alarm for about 10 minutes while the smoke clears. For interconnected systems, push the button on the triggering alarm (the one with the flashing red light).
To turn off a smoke alarm permanently, you must completely disconnect it from its power sources. First, turn off the dedicated breaker at your home's electrical panel. Then, twist or slide the unit off its ceiling mount, disconnect the hardwire plug, and remove any backup batteries.
Use thumb to pull deactivation tab outward until tab snaps into place. This will discharge the powercell and deactivate the unit.
Use the Test/Silence button to hush the warning. After about 2 days, the warning will resume. After ~2-3 weeks, the warning cannot be silenced. If your alarm is over 7 years old replace with a new alarm as soon as possible.
To silence a false alarm, press and hold the Test/Silence button on the face of the unit for 5 to 10 seconds. If your alarms are interconnected, locate the specific unit flashing a red light and press the silence button on that device.
Press and release the Test/Silence button or use the app (if using the app to silence the warning you will need to be within Bluetooth range of the detector). The horn will chirp, acknowledging that the End-of-Life Silence Feature has been activated.
To immediately stop a First Alert smoke alarm from beeping, press and hold the Test/Silence button for 10-15 seconds to silence it and clear residual power. Next, twist the alarm counter-clockwise to remove it from the wall or ceiling, remove the old battery, and install a fresh one.
The "hush" or "silence" button is typically located on the front or center of the smoke alarm cover, often labeled "Test/Hush" or "Test/Silence". It is designed for easy access to temporarily silence nuisance alarms (like cooking smoke) for 7–15 minutes.
To immediately silence a First Alert smoke alarm without a battery, press and hold the Test/Silence button for 15 to 30 seconds. If it is a hardwired model, you may also need to flip your home's circuit breaker to cut the power.
For hardwired units, a steady green LED light indicates that the alarm is receiving AC power. Battery-operated units will have a quick flash every 30-45 seconds. However, this does not necessarily mean the alarm is working. Pressing the Test button is the only recommended method to ensure functionality.
To temporarily disable a smoke detector, press and hold the Test/Silence button (also called the hush button) on the unit for a few seconds. For a more prolonged or complete deactivation, safely twist or slide the unit from its mount and remove the battery or disconnect its power.
Yes, you can temporarily unplug or disconnect a First Alert smoke detector to replace a battery, silence a false alarm, or conduct maintenance. However, to maintain your home's fire safety, you should never leave a detector unplugged long-term or permanently throw it in a drawer without a replacement.
If your First Alert smoke alarm is randomly going off with no smoke present, first silence the alarm by pressing the test/mute button. Next, inspect the unit for common causes: dust or spiderwebs in the sensing chamber, trapped insects, low batteries, high humidity, or an expired sensor.
Pressing the button (Test/Silence) on a smoking alarm will usually stop the chirping temporarily, but it will not fix the underlying issue causing it. The noise is most often due to a low battery, requiring a battery change to permanently stop the beep.
To turn off a smoke alarm permanently, you must disconnect its primary power source. For battery-free units, this means shutting off the hardwired electrical connection. Leaving it connected without a battery is unsafe because it disables the backup power.
Yes, you can temporarily mute or "hush" a smoke detector. To silence a false alarm, simply press and hold the Test/Silence button on the unit for a few seconds. This will silence the alarm for 5 to 15 minutes, depending on the model.
To silence a nuisance alarm, press the Test/Silence button on your unit. This will quiet the horn so you can find what caused the alarm. If you're not able to find the button, read our guide for more help: Use the Silence Button on Smoke or CO Alarms.
To instantly stop a smoke detector from beeping without immediately replacing the battery, remove the unit from its wall or ceiling mount, disconnect the power, and drain the internal electrical charge:
It's a sound many homeowners have heard: the 3 a.m. alarm chirp. Why does it happen? Well, it's a simple matter of the battery's charge level and a home's air temperature. As a smoke alarm's battery nears the end of its life, the amount of power it produces causes an internal resistance.
Press the hush/silencing button. It will silence the entire interconnected system. The button may also say “test.” It should silence all the alarms immediately unless there's still smoke and debris. It will reset in eight minutes, given that the smoke and debris have dissipated.
To stop your smoke alarm from beeping immediately, press and hold the central Test/Silence button for 15–20 seconds. If it continues, twist the unit counter-clockwise to remove it from the ceiling or wall, take out the battery, and unplug the power connector if it is hardwired.
To turn off a First Alert smoke alarm, press and hold the Test/Silence button on the front of the unit to silence nuisance alarms. To permanently disable a chirping or beeping alarm, twist the unit counterclockwise to remove it from the wall or ceiling, then remove the battery or disconnect the power harness.
To stop a hardwired smoke detector from beeping, first press the Test/Silence button. If it continues chirping, twist the unit counter-clockwise to remove it from the ceiling, open the battery door, replace the low backup battery, and hold the test button for 15 seconds to clear residual energy.
If your First Alert smoke alarm is beeping 3 times every 45 seconds, it is signaling an internal fault, a low battery, or the end of its operational lifespan. It is not an emergency alarm (which would be continuous beeping).