This Hardwired Smoke & Carbon Monoxide Detector, Interconnectable with AA Battery Backup, model 900-CUAR, helps protect you and your family from two hazards – fire and dangerous carbon monoxide (CO) – in one unit. This smoke and carbon monoxide detector combo features self-testing components that are always checking to make sure the alarm is on and working.* What’s more, the included mounting bracket makes installation quick and easy. This carbon monoxide detector and smoke alarm is capable of being hardwired to other select Kidde alarms,** to provide whole-home alarm activation. This setup allows interconnected Kidde alarms to sound in unison, helping to ensure that everyone in the house is alerted.

Features

• 2X the Detection - Alerts you to both smoke & CO using a single alarm.
• Self-Testing - Smoke & CO alarm is equipped with components that are always checking to ensure the device is operating as expected.
• Whole-home Alarm Activation - Expand detection via hardwired connections to other Kidde alarms – when one alarm sounds, they all do.