DETECTS CARBON MONOXIDE: Model COBD sounds a loud 85-decibel alarm when carbon monoxide is detected; easy-to-read backlit digital display shows status and alarm operation; a test/hush button enables quick checks or silencing alerts; replaces model 900-0146LP AA BATTERY POWERED: Carbon monoxide detector installs without wiring, mount it on the wall or set it on a table, and operates during outages using two included AA batteries; mounting hardware included TRAVEL-READY DESIGN*: Compact CO detector is suitable for use at home or for travel; lightweight design allows you to take it on the go to use in hotels or vacation rentals when detection is needed away from home TESTED & TRUSTED: This carbon monoxide alarm is rigorously tested to meet UL 2034, 5th Edition standards, and is ETL Listed; includes a 10-year limited warranty on alarm BUILT FOR EVERY HOUSEHOLD: Designed to help provide dependable carbon monoxide monitoring for everyday residential use; supports renters, homeowners, and pet owners seeking added awareness and detection from CO hazards in the home