Answer
Aug 27, 2024 - 11:30 AM
Yes, the "tun tun tun" sound you're hearing from your BRK Electronics 120V Hardwired Smoke Alarm with Battery Back-Up (model 9120BA) is likely indicating that the battery is weak and needs to be replaced. Here's how you can replace the battery to resolve the issue:
Steps to Replace the Battery:-
Turn Off Power: If the alarm is hardwired, you should turn off the power to the smoke alarm at the circuit breaker to ensure safety.
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Remove the Alarm: Gently twist or unclip the smoke alarm from its mounting bracket on the ceiling or wall. This will allow you to access the battery compartment.
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Open the Battery Compartment: Once the alarm is removed, locate the battery compartment, which is usually on the back or side of the unit. Open the compartment door.
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Remove the Old Battery: Take out the old battery from the compartment. Be mindful of the battery’s orientation so you can insert the new one correctly.
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Insert a New Battery: Install a new 9V battery (or the specific type recommended by the manufacturer) into the compartment, ensuring the correct polarity. It's best to use a high-quality alkaline battery for longevity.
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Reattach the Alarm: After replacing the battery, close the battery compartment door, reattach the alarm to its mounting bracket, and twist or clip it back into place securely.
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Turn On Power: If you turned off the power at the circuit breaker, turn it back on.
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Test the Alarm: Press the test button on the alarm to ensure it’s functioning properly. The alarm should emit a loud sound to indicate it's working.
If the sound persists after replacing the battery, there could be another issue with the alarm, such as dust or debris inside the unit, or the unit may be at the end of its life (most smoke alarms need to be replaced every 7-10 years). In such cases, you may need to clean the unit or consider replacing it entirely.
