Kidde Hardwired Smoke & Carbon Monoxide Detector AA Battery Backup Voice Alerts Interconnectable LED Warning Light Indicators 2 Pack 900-CUAR-V

The Kidde Hardwired Smoke & Carbon Monoxide Detector AA Battery Backup Voice Alerts Interconnectable LED Indicators model 900-CUAR-V is an alarm combo that detects smoke fire & carbon monoxide gas using a single alarm. Operating through your home's wiring (120V AC power) while 2-AA batteries (included) provide battery backup during the event of a power failure the Kidde Smoke and Carbon Monoxide Alarm is equipped with self-testing components that are always checking the unit to ensure the device is operating as expected*. Photoelectric sensing technology that senses visible fire particles (associated with smoldering fires) while an electrochemical sensor detects carbon monoxide. When a smoke fire or carbon monoxide event occurs the Kidde fire alarm warns with an 85-decibel alarm sound & flashing red LEDs and voice alerts announcing \"Fire! Fire!\". For carbon monoxide detection the alarm will sound with the announcement \"Warning! Carbon Monoxide!\". When the smoke alarm