When installing the battery.
First alert smoke detector battery change.
We also offer hardwire alarms with a battery backup for protection during power outages.
Open the battery drawer.
Buy a 10 year sealed battery smoke alarm.
What smoke alarm do you have.
The national fire protection association nfpa recommends changing the batteries in your smoke alarm every 6 months.
Remove the old battery.
Remove the old batteries.
Deactivate the bracket lock use a flathead screwdriver and place it in between the unit s mounting bracket and the mounting bracket pin.
Insert the new batteries and make sure the contact points are.
The battery in 10 year alarms last for the life of the alarm eliminating the need for battery replacements.
If the unit is locked onto the bracket you will have to deactivate the bracket lock.
Press and hold the test reset button for 10 seconds to fully discharge the detector.
At first alert we are committed to creating reliable products that help protect your home and family.
How to replace a 9v battery.
Look at your 9v battery to identify the positive and negative contacts similar to what is shown in the image.
If it s locked you may need to remove the locking pin to open it.
How to replace an alarm battery.
The first step is to remove the smoke alarm from the mounting bracket.
At first alert we offer 10 year smoke alarms that have a built in 10 year battery which eliminates the need for battery replacements for the life of the alarms.
How to change batteries in first alert alarms number of views 45 18k minimum installation requirements for models 1042135 or 1042136 onelink smart smoke co alarm.