Hardwired Replacement Alarms With Battery Backup
Find hardwired replacement alarms with battery backup to replace an existing alarm while keeping protection in place during a power outage. Check each alarm’s wiring requirements, backup battery type, and compatibility with your current setup before choosing a replacement.
$28
.47
Sale Was $31.99 Save $3.52 (11%)
$51
.99
Sale Was $64.99 Save $13.00 (20%)
Best Of FAQ
A hardwired alarm gets its main power from your home's electrical wiring and has a battery as a second power source. That's different from a battery-only alarm, which doesn't connect to household wiring.
No. Backup battery types vary by model. Some alarms take replaceable batteries, while others have a sealed battery built in. Check the model's battery requirements before picking up replacements.
Wiring connectors aren't universal, even within the same brand. Compare your current alarm's model number and connector information with the replacement's compatibility details. Some replacements support a manufacturer-approved adapter.
Interconnect refers to a connection that lets compatible alarms communicate with one another. Depending on the model, that connection may be wired or wireless. Check the manufacturer's compatibility list rather than assuming different alarms will work together.
That depends on the replacement model. Mounting brackets can differ between brands and model lines, so an existing bracket may not match. Check the replacement alarm's installation instructions to see which bracket it requires.