Webfollow this guide to fix your first alert smoke alarm. This fix will stop the first alert smoke alarm from beeping when your battery is low. Make sure you have your 9v battery in. Webhow to change first alert alarm batteries. Before you start replacing batteries in your first alert smoke detector, it's important to consult your manual for. Webif 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.
