DETECTS CARBON MONOXIDE: Model COB10 monitors CO and sounds a loud 85-decibel alarm to signal evacuation to fresh air; LED warning light indicates hazard; test/hush button allows quick checks or temporary silencing; replaces model C3010 10-YEAR BATTERY: Maintenance-free built-in 10-year battery helps save up to $40 over the life of the CO alarm in battery replacements; no low battery chirps to help you sleep peacefully at night; get replacement reminders after 10 years FLEXIBLE PLACEMENT OPTIONS: Install on the wall or set on a table or countertop for convenient carbon monoxide detection where you need it most; mounting hardware included 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, not a battery performance claim 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