First Alert SC9120B Hardwired Smoke & Carbon Monoxide Alarm With Battery Backup

Keep your family safe with the First Alert SC9120B hardwired alarm. It's a two-in-one unit that detects both smoke and carbon monoxide, so you don't need separate devices. It runs on your home's wiring but has a 9V battery backup in case the power goes out. Features like 'Intelligent Sensing' help cut down on false alarms, and if it goes off, a 'Latching Alarm Indicator' shows which unit triggered it—super handy if you have multiple alarms connected. Installation is a breeze with the 'Perfect Mount' bracket and quick-connect wiring. It also has a silence button, a loud 85dB horn, and comes with a 7-year warranty. A reliable, pro-grade choice for any home.