This First Alert Hardwired Smoke Alarm with 10-year battery backup provides constant monitoring for the life of the alarm, even if there’s a power failure. The detector features an ionization sensor for detection of smoke and fast-flaming fires, as well as a loud, 85-decibel alarm. One button silences any nuisance alarms and also tests detector functions, while lights indicate if the alarm detects smoke. The latching alarm indicator automatically identifies which unit initiated the alarm, even after the conditions that set off the alarm have subsided. And an end-of-life signal enhances your safety by letting you know when it’s time to replace the unit. Connect it to compatible BRK or First Alert alarms within a single-family residence, and when one alarm is triggered, all connected alarms will sound.
• Ionization sensor reliably detects flaming fires
• Hassle-free, easy installation; no need to rewire
• 120V alarm hardwires directly into your home’s electrical system
• Battery backup for detection during a power outage
• Easy-to-access battery drawer with 9V battery included
• Works in tandem with other First Alert Alarms
• Measures 5.6″ dia. x 1.9″H
• 10-year limited warranty
Before You Order
Verify part number 1039939 exactly Match the listed product details to the part you are replacing before ordering. Compare dimensions, specifications and fitment information with your RV or component.
Frequently Asked Questions
What part number should I verify before ordering?
Verify 1039939 on your existing part, documentation or equipment label before ordering.
How should I confirm this part fits?
Compare the listed part number, dimensions, specifications and fitment details with your existing component. Do not rely on appearance alone.
