▪ 120V AC With 9V Battery Backup
▪ 3 Way Protection In 1 Alarm: Carbon Monoxide (CO), Propane Gas And Natural/Methane Gas
▪ Electrochemical CO Sensor
▪ Digital Display
▪ Two Silence Features: Silences Low Battery Chirps For Up To 8 Hours Or Temporarily Silences Nuisance Alarms
▪ End-Of-Life Signal (CO)
▪ Single Test/Silence Button
▪ 5-Year Limited Warranty
▪ Mfg #GC016CNA