Help protect your home, pets, and family with Kidde carbon monoxide detector with digital display, model COPD, designed to help provide dependable detection of carbon monoxide hazards. Major sources are fuel-burning appliances, like gas stoves, water heaters, furnaces and fireplaces. This plug-in carbon monoxide detector monitors CO levels and sounds a loud 85-decibel alert when dangerous CO level is detected to signal occupants to go outside. A backlit digital display provides clear visibility to the CO level and is suitable for homes and apartments. The rotating plug-in design allows flexible installation in vertical or horizontal outlets without blocking adjacent sockets. Two included AA alkaline batteries provide backup power to help maintain operation during outages, while built-in power surge immunity supports continued performance during voltage fluctuations. Test/Hush button enables quick function checks or temporary silencing of alerts when appropriate. Tested to meet UL 2034 5th Edition standards and is ETL Listed, this co monitor is backed by a 10-year limited warranty. *Not approved for RV or boat use. Pack carefully to help avoid damage. Remove batteries prior to travel and reinsert upon arrival. For conditioned spaces only. Test before use. 120V single voltage; may not work with 220V outlets.