To temporarily silence your ADT low battery alarm, enter your [security code] + [OFF] or just press [#] on your keypad. For touchscreen panels (like ADT Command), tap [Disarm] and enter your security code.
When your ADT system indicates a low battery, first identify if the alert is coming from your main control panel or a specific door/window sensor. Silence the beeping by entering your [User Code] + [OFF] (or pressing "OFF") on your keypad, then replace the battery to clear the trouble alert.
Yes this is the dumbest design flaw of ADT. If any of your sensor batteries happen to die while your system is armed, instead of receiving any type of warning or distinctive chirp, your entire system will alarm with the full air raid siren, call the police, etc.
To immediately silence the beeping, enter your system's disarm code, press the # key, or press * then 2 to acknowledge the trouble alert. To stop it permanently, you must either replace the backup battery or disconnect the system from both AC power and the battery.
If you are receiving notifications or error messages alerting you to a low battery, or you hear beeping, you may need to replace the battery. Before replacing it, first make sure that your battery is seated properly in the sensor.
Most systems will begin beeping or chirping as a result of a total power outage or failure to recharge the system backup battery. For many of our most popular systems, beeping alarms and low battery trouble beeps can be silenced by pressing the [OFF] or [#] buttons from the keypad.
Disabling low battery notifications depends on your device. For iPhones, Apple does not have a native "off" switch, but you can bypass the pop-ups using a clever Shortcuts workaround. For Android and Windows, you can adjust your system settings directly.
Yes, a bad or low battery can cause both car alarms and home security alarms to go off. It is one of the most common causes of random, unexplained alarms.
To quickly silence an active, beeping alarm on most ADT panels, enter your 4-digit Security Code followed by OFF (or press the # key).
A single chirp every 30–60 seconds usually means the battery is low or the alarm has reached the end of its life. Replacing the battery or the unit should resolve the issue. A continuous loud alarm generally means the detector senses smoke or particles in the air.
Yes, a low battery in a thermostat can significantly affect your furnace's performance, preventing it from turning on, running erratically, or failing to maintain your desired temperature by disrupting the signals sent from the thermostat to the furnace's control board.
Order Summary
When you order on MyADT, your QSP provides one free system battery per year. Additional system batteries cost $29.99.
How to Silence a Low Battery Smoke Alarm First Alert
ADT batteries charge automatically through your home’s electrical system. Simply ensure your panel or base station is plugged securely into a working wall outlet. After a power outage or a battery replacement, it typically takes 24 to 48 hours for the backup battery to fully charge and clear low-battery alerts.
If you have basic DIY skills, changing the battery in your burglar alarm is relatively straightforward. To change your home alarm battery, follow these steps: Open panel: first remove the cover of your main alarm panel by unscrewing the screws holding the front of the panel on. The alarm will then sound.
To quickly silence a low battery beep on most ADT panels, enter your [Security Code] + [OFF] or press the [#] or [*] key depending on your specific keypad.
To silence an alarm beeping due to a low battery, you must either acknowledge the trouble alert on your system, remove the depleted battery, or replace it entirely.
An ADT "System Low Battery" means the rechargeable backup battery inside your main control panel is depleted or needs replacing. Your system usually operates on standard AC wall power, but uses this battery to keep your home protected during power outages.
For many ADT systems, an alarm or low battery trouble beeps can easily be silenced. Just press the OFF or # button on your keypad. If pressing those buttons on your keypad doesn't silence the low battery alerts on your fire alarm, please check your system user's manual for more detailed next steps.
Wired Alarms
To immediately silence a beeping alarm, first enter your user code and press Off or Silence on the keypad. Alternatively, you can press #, *, or the Reset/Cancel button. For persistent issues, look at the screen to identify the specific error (e.g., low battery, power loss, or lost connection) and address the underlying cause.
A house alarm beeping every 30 to 60 seconds typically indicates a low battery, an expired detector, or a triggered system trouble code. Identifying whether it is a security panel, smoke detector, or carbon monoxide (CO) monitor will tell you exactly how to fix it.
To stop a device from beeping, first identify what is making the sound, as the fix depends entirely on the source.