Kidde 21032250 900-Cuar Dw Smoke/co With AA Bbu

900-CUAR DW Smoke/CO With AA BBU 2-In-1 Detection - Smoke Detector-Carbon Monoxide Detector Combo Alerts You to Both Smoke And Carbon Monoxide In A Single Alarm Self-Testing - Smoke and carbon monoxide detector uses internal, self-testing components that are always checking to ensure the device is operating as expected (not a substitute for weekly manual testing). Whole-home Alarm Activation - Expand detection via hardwired connections to other select Kidde alarms so when one alarm sounds, they all do. Easy install mounting bracket (included) for quick installation in 4 orientations 120V AC hardwired with AA backup batteries - provides reliable detection, even during power outages Photoelectric smoke sensor detects visible fire particles associate with slow, smoldering fires sooner than an ionization sensor Electrochemical sensor detects carbon monoxide & remains stable during humidity changes & unstable temperatures One-Touch button activates the Hush feature to temporarily silence nuisance alarms, tests the detector's electronics & verifies proper operation, & silences low battery chirp for up to 24 hours, maximum of 7 days End of life chirp alerts user to replace the smoke detector-carbon monoxide detector combo after 10 years of operation. An 85-decibel alarm will sound when the smoke and CO alarm senses a smoke or carbon monoxide hazard LED warning indicators alert you to various status.

• 2-In-1 Detection - Smoke Detector-Carbon Monoxide Detector Combo Alerts You To Both Smoke And Carbon Monoxide In A Single Alarm
• Self-Testing - Smoke and carbon monoxide detector uses internal, self-testing components that are always checking to ensure the device is operating as expected (not a substitute for weekly manual testing)
• Whole-home Alarm Activation - Expand detection via hardwired connections to other select Kidde alarms so when one alarm sounds, they all do**
• Easy install mounting bracket (included) for quick installation in 4 orientations