Try a manual reset.
Remove the batteries and hold down the reset button for 15 to 20 seconds. Reconnect the batteries and alarm. It will most likely beep once as evidence it is working, then it should stop.
First, try the reset button on each smoke alarm. If that doesn't work, flipping the circuit breaker off and back on might stop the noise. If all of that fails, your ultimate solution may be to disconnect the smoke alarms and remove their batteries one by one.
Yes, you can adjust it on your own. It will reduce pesky false alarms. You need to remove its data card from the smoke alarm. Then, by using a screwdriver, you can adjust the sensitivity of the card.
Even after the battery has died, the detector maintains a residual charge that will keep the chirp going for at least seven days. To get the device to stop chirping once the battery has been removed, you must drain this residual charge by holding the test button for 15 seconds.
First, follow these quick troubleshooting steps: Locate the reset button on the surface of the smoke detector. Hold it for 15–20 seconds and then release. Wait a couple of minutes and listen for the chirping noise again.
Most battery powered smoke detectors will beep for a minimum of 30 days before the battery dies. You'll know the battery is losing charge if you hear consistent beeping every 30 to 60 seconds.
The Silence button does not disable the unit. It makes it temporarily less sensitive to smoke. If smoke around the unit is dense enough to suggest a dangerous situation, the unit will stay in alarm or may re-alarm. If you do not know the source of the smoke, do not assume it is an unwanted alarm.
Many carbon monoxide and smoke detectors come with a “Hush” feature, which will stop the beeping for 72 hours. To silence the beeping, press and hold the “Hush” or “Test” button. The system will chirp to let you know the command is accepted, and you will have 72 before it begins again.
The battery may need to be replaced. An alarm will chirp every 30 to 60 seconds for a minimum of seven days. With a "low battery" announcement, disconnect the unit and replace the batteries. You can also put a unit into low battery hush for up to 12 hours on newer units by pressing the test/hush button.
If your smoke alarm is chirping even though it has a new battery, try these troubleshooting steps to clear out residual charge from the old battery. Remove the alarm from your ceiling or wall. Open the cover and take out the battery. Press and hold the test button for 15-30 seconds.
The most likely reason smoke detectors go off unexpectedly is that people aren't changing the batteries in them often enough. In most sensors you might think of, the strength of the signal goes up when they detect what they're supposed to. Common causes of smoke detector false positives around the house.
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.
Power interruptions are common in areas where utility companies switch grids in the early hours of the morning. In AC or AC/DC smoke alarms, a loose hot wire connection can intermittently disconnect power to the smoke alarm. The effect is the same as a power failure. When power is restored, the units may alarm briefly.
As the battery in a smoke alarm becomes weak, the smoke alarm will "chirp" about once a minute to alert you that the battery needs to be replaced. Note: Only the alarm with a low battery will chirp. No signal is sent through the interconnect wire. The other alarms will be silent.
The "HUSH" feature has the capability to temporarily desensitize the smoke alarm circuit for approximately 7 minutes. This feature is to be used only when a known alarm condition, such as smoke from cooking, activates the alarm. The smoke alarm is desensitized by pushing the "HUSH" button on the smoke alarm cover.
If you hear a neighbour's smoke alarm, check if there's a fire. Perhaps ring the doorbell or see if there are any obvious signs that a fire may have started. Make sure you don't put yourself in any danger.”
As with any electronic system but more specifically a fire alarm system, the system components can degrade over time. Dust particles, dirt and other airborne contaminants are often the reason for a smoke detector to be too sensitive or not sensitive enough and both of these conditions can be trouble.
2. Cover the Detector. 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.
Fortunately, it's easy to cover a smoke detector and prevent it from going off at an inopportune time. Just place a strip of painter's tape over the unit's sensor chamber, or wrap it up with a shower cap or plastic bag and secure it with a rubber band.
If you have changed the batteries and tried the circuit breaker, but the beeping persists, you may need to try resetting the detector(s): Use the reset button: most smoke detectors have a red reset button. Hold the reset button down for approximately 15-20 seconds.