BRK SC9120B Smoke & Carbon Monoxide Alarm (battery back-up) is a combination smoke and carbon monoxide alarm that protects against two deadly household threats. Meets code for both smoke and CO alarms.

Key features include:

Smoke & Carbon Monoxide Combination Alarm. One alarm protects against two deadly household threats.
Intelligent Sensing Technology designed to help reduce unwanted or nuisance alarms.
Smart Interconnect can be interconnected to BRK Smoke Alarms. One interconnect wire carries both smoke and CO alarm signals.
Single Button Test/Silence eliminates confusion. Depending on what mode the alarm is in, pushing the button provides different functions such as testing the alarm, silencing the alarm, re-testing the alarm when in silence and clearing the Latching feature.
Latching Alarm Indicator easily identifies initiating alarm even after the alarm condition has subsided.
Perfect Mount System includes a gasketless base for easy installation and a new mounting bracket that keeps the alarm secure over a wide rotation range to allow for perfect alignment.
Dust Cover is included to keep the alarm clean during construction.
Easy Installation/Maintenance features include a large opening in the mounting bracket for easy access to wiring. A battery pull tab that keeps the battery fresh until the home is occupied.
Side Load Battery Drawer allows for easy battery replacement without removing the alarm from the ceiling or wall.
Improved UV Resistance keeps the alarm from discoloring over time.

At a Glance: