BRK Hardwired Smoke And Carbon Monoxide Detector 2 Pack With 9-Volt Battery Backup - 2X-SC9120B

This 2-pack of BRK SC9120B hardwired smoke and carbon monoxide detector alarms includes 9-volt battery backup for continued operation during a power failure. Each alarm uses electrochemical CO sensing technology and an ionization smoke sensor.

The alarms feature an 85-decibel alarm, a test and silence button, indicator lights, a latching alarm indicator, and an end-of-life signal. They can connect with compatible BRK or First Alert alarms within a single-family residence.

• Pack Size: 2
• MPN: 2X-SC9120B
• Battery Backup: 9-volt
• Alarm: 85-decibel
• Smoke Sensor: Ionization
• CO Sensor: Electrochemical