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.
First alert smoke detector battery change.
Choose the option that allows you and your family the most peace of mind.
How to replace a 9v battery.
Remove the old batteries.
If it s locked you may need to remove the locking pin to open it.
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.
Look at your 9v battery to identify the positive and negative contacts similar to what is shown in the image.
The first step is to remove the smoke alarm from the mounting bracket.
Buy a 10 year sealed battery smoke alarm.
How to replace an alarm battery.
Open the battery drawer.
These alarms also have an end of life warning to remind you to replace the alarm after 10 years.
Use the plastic tab to gently open the battery compartment.
The battery in 10 year alarms last for the life of the alarm eliminating the need for battery replacements.
We also offer hardwire alarms with a battery backup for protection during power outages.
Remove the old battery.
What smoke alarm do you have.
If the unit is locked onto the bracket you will have to deactivate the bracket lock.
When installing the battery.
The national fire protection association nfpa recommends changing the batteries in your smoke alarm every 6 months.
Deactivate the bracket lock use a flathead screwdriver and place it in between the unit s mounting bracket and the mounting bracket pin.