The batteries on a fire alarm need to be installed and connected correctly so that it accurately warns you in case of a fire.Īs a result, the fire alarms are engineered in such a way that they will blink every 10 seconds when the batteries are not installed properly. As a result, when the charge of the battery gets low, it will start to blink red light every 10 seconds.

If your battery is low on charge, your alarm won’t function properly and it won’t be able to give a warning of fire correctly. Every 10 seconds The battery is low on charge:

Let’s take a look in detail at why your fire alarm is blinking red light for 10, 15, or 30 seconds. However, it can also mean that the unit is fine and functioning as it should. It can happen if the fire alarm is sensitive to smoke indoors, and the fire alarm is malfunctioning. If the fire alarm blinks for 30 seconds, it indicates that there are some serious problems in the unit. It also indicates that you need to test the fire alarm. The fire alarm blinks for 15 seconds if the unit needs maintenance, and due to lingering smoke. The fire alarm blinking red for 15 seconds means that there are moderate issues with the unit. It usually indicates that the batteries are low on charge, the batteries are not installed correctly, and dust is accumulated in the alarm. If a fire alarm blinks for only 10 seconds, then it mostly indicates that there are minor issues with the alarm. The red light can blink in the fire alarm for both minor and major issues. If the fire alarm blinks a red light for 10, 15, or 30 seconds, then it means that there is a problem with the fire alarm.

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