Plug-in combination explosive gas and carbon monoxide alarm with battery backup and backlit digital display easily plugs into any standard outlet with no additional mounting necessary; line cord offers multiple placement options. Battery backup ensures alarm works even during power outages. Digital display illuminates hazard level when in alarm or when any button is pressed. Remote mute silences nuisance alarms by pressing any button on a standard household remote control (remote not included). Single button also tests alarm functions. Explosive gas and carbon monoxide alarm utilizes electrochemical carbon monoxide sensor for increased accuracy. 5-year limited warranty. Combination explosive gas and carbon monoxide meets UL standards.