Kidde 900-CUAR Hardwired Smoke & Carbon Monoxide Detector Item# 21032250

Hardwired Smoke & Carbon Monoxide Alarm, Interconnectable with AA Battery Backup Model 900-CUAR

The Kidde 900-CUAR Hardwired Smoke & Carbon Monoxide Detector with AA Battery Backup is a versatile unit designed to protect your family from fire and carbon monoxide hazards. Featuring self-testing components and effortless installation with the included bracket, it can also interconnect with other Kidde alarms for comprehensive home safety. This photoelectric smoke alarm excels at detecting larger, visible fire particles, complementing ionization detectors for optimal fire and smoke detection when used together. It signals threats with a red LED flashing and specific alarm beeps, including fire, carbon monoxide, and low battery warnings, with an alarm memory feature for added peace of mind. This UL Certified alarm comes with a 10-year limited warranty and meets various safety standards and requirements, making it an essential addition to your home's safety measures.

• 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.**
• Quick-Install Mounting Bracket - Included in the box for simple, easy installation in 4 orientations.
• AC-hardwired with battery backup - Powered by home’s electricity in order to provide reliable detection. 2-AA batteries provide smoke detector-carbon monoxide detector combo backup power during short-term power outages.
• Photoelectric smoke sensor - May detect visible fire particles associated with slow smoldering fires sooner than an ionization sensor.
• Electrochemical CO sensor - Provides accurate and continual CO protection during the product’s life, remains stable during temperature and humidity changes and resists reactions to household gases that may cause false readings or reduce sensitivity.
• One-Touch Button - Unique cat-eye button on the face of the detector performs the following functions:
• Activates the Hush feature to temporarily silence nuisance alarms.
• Tests the unit’s electronics and verifies proper operation.
• Resets the carbon monoxide smoke detector combo during a CO alarm (Unit will re-enter alarm within 6 minutes of reset if 70ppm or more of CO is present).
• Silences a low battery chirp for up to 24 hours. Silences the end of life chirp on this carbon monoxide detector and smoke alarm for up to 24 hours.

*Self-testing is not a substitute for a manual push test of the alarm. Perform a button test once per week to verify proper alarm operation
**Alarms only connect with select Kidde alarms that have hardwired AC interconnect capability (see User Guide)