Smoke Detector Beeps Twice Then Stopped – How to fix it?

We’ll explain what it means when a smoke detector beeps twice and then stopped, as well as what to do to diagnose the issue and permanently eliminate the “chirping” sound.

When a smoke detector beeps twice every now and then, it is a sure sign of a low battery. However, the detector may sound twice for a variety of reasons, including a software error or a failure to charge the backup battery.

Let’s take a closer look at what the two beeps imply and how to pinpoint the issue:

What Do Two Beeps On Smoke Detectors Mean?

Two beeps on most smoke detectors indicate that the battery needs to be replaced.

However, the beeping might be caused by a problem in the device’s software, and there are a few remedies you can try first.

When the beeping is odd, a pattern you’ve never heard before, the batteries are most likely to blame. But we’ll find out for sure!

Let us now look at the finest solutions for the two beeps in a smoke detector:

How To Fix Smoke Detector Beeps Twice Then Stopped?

Because the beeping may not always be caused by a low battery, you should investigate all possible causes.

This is why we strongly advise following the order of our answers and reading everything thoroughly.

Let’s begin with a simple power circulation to observe how it goes:

Fix -1 Power Cycle the Smoke Detector (Restart)

Smoke Detector Beeps Twice Then Stopped – How to fix it?

A power cycle is an effective approach to silence the obnoxious beeping of your smoke alarm.

The power cycle effectively drains the remaining juice from your smoke detector, resetting the device and updating ALL services. It could be useful.

Here’s how to power cycle the smoke detector in three simple steps:

Note: When integrating with a hardwired smoke detector, you must turn off the circuit breaker!

  1. Make use of an object to assist you in reaching your smoke detector.
  2. You’ll need to twist the top section for a hardwired smoke detector.
  3. The pin connector must then be disconnected.
  4. The battery in both types of detectors may be evacuated.
  5. Wait 5 minutes while the detector is without batteries.
  6. Replace the smoke detector’s batteries.
  7. Wait for the gadget to power up.

When you’re done it’s important to perform a test by pressing the TEST button!

Note: If the beeping begins soon after the power cycle, the battery is low.

Fix – 2 Use the Hush Button

Smoke Detector Beeps Twice Then Stopped – How to fix it?

On the bottom panel of most smoke detectors, there is a Hush/Silence button that will stop the device from chirping and beeping.

You can mute the device by pressing the hush button once.

The Hush Button?

Although most smoke detectors feature the Hush/Silence button in a different location, it is usually found on the device’s top panel.

It makes no difference whether you single-press or hold the button labeled TEST/HUSH.

The HUSH button functionality is the following:

  • Hold the button – the smoke detector will enter an alarm mode until released.
  • Single press – the smoke detector will be muted until the next alarm/indication.

Note: To silence the alarm/beeping on some smoke detectors, press and hold the hush button

Fix – 3 Reset Smoke Detector’s Power Source

The battery within the smoke detector is being charged by the electrical installation.

If the breaker’s power supply is insufficient, your smoke detector will beep twice to alert you to the situation.

The smoke detector’s circuit breaker should be reset as follows:

  1. Locate the breaker panel.
  2. Switch on the circuit breaker.
  3. Look for a switch for the smoke detector room.
  4. To turn off the power, press the switch downward.
  5. Hold your breath for 60 seconds.
  6. Reconnect the electricity.
  7. Pay attention to the blaring of the smoke detector.

Note: If the power is off for an extended period of time, your detector may beep to signal “low battery” for a few hours until the battery is charged.

Fix – 4 Reinstall the smoke detector

A more technical remedy is on the way: reconnect the smoke detector cables.

When there is a defective connection or the backup battery is not charging, the smoke detector will notify you with a “beep” (two beeps at a time).

Here’s how to inspect the wiring and reconnect the connections on your smoke detector:

Note: Keep in mind that this solution only applies to hardwired smoke detectors.

  1. Disconnect the smoke detector from the power supply using the circuit breaker switch.
  2. Unscrew the smoke detector from its mounting bracket.
  3. Remove the battery from the container.
  4. Remove the pin connector cables with care.
  5. Follow the cords all the way to the electrical box.
  6. Reassemble the smoke detector.

Fix – 5 Reset the Smoke Detector

Reset the Smoke Detector

If the beeping continues, you can do a smoke detector reset.

This usually resolves any difficulties with the software that are generating false alerts, especially if you have already replaced the battery yet the beeping continues.

Here’s how to completely reset any type of smoke detector:

  1. Turn off the power to the smoke detector at the circuit breaker.
  2. Remove the entire smoke detector from the mounting bracket.
  3. Eject the battery.
  4. Press and hold the “TEST” button for 15 seconds straight.
  5. Re-install the battery as well as the smoke detector.
  6. Turn on the power back from the circuit breaker.
  7. Test if the detector will now chirp or beep twice.

Fix – 6 Replace Smoke Detector Battery

The battery is very significant in the setting of your smoke detector.

Whether you have a wired or wireless smoke detector, the device will begin beeping when the battery is low.

Follow these steps to replace the battery in your smoke detector:

  1. Twist open the bottom compartment of the detector.
  2. Eject the battery inside of the device.
  3. Grab a new AA battery to put in your smoke detector.
  4. Install the new battery unit.
  5. Put the bottom compartment back on your device.


As a result, the two beeps from smoke detectors mostly signal a low battery or that the backup battery in hardwired systems is not actively charging. This might indicate that the battery needs to be replaced or that the gadget needs to be reset.

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