FIRST ALERT BRK SC9120B Hardwired Smoke and Carbon Monoxide Detector with Battery Backup and FIRST ALERT BRK9120b6CP Smoke Detector Alarm | Hardwired with Backup Battery

Key features

• Keep your family safer with this hardwired smoke and carbon monoxide alarm; the 10-year battery backup means constant monitoring for the life of the alarm even if there's a power failure
• Features an electrochemical Carbon Monoxide sensing technology as well as intelligent smoke sensing technology to reduce nuisance alarms. Keyhole slots in the mounting bracket eliminate the need to remove the electrical box screws for installation
• Keep your family safe with this hardwired smoke alarm; the 10-year battery backup means constant monitoring for the life of the alarm, even if there's a power failure
• Equipped with an ionization sensor, this smoke alarm reliably detects smoke from fast-flaming fires and alerts you with an 85-decibel alarm