• CO detector with digital display & alert modes; 85 decibel alarm alerts of fire
• Electrochemical sensor technology - detects carbon monoxide & other forms of combustible gas such as propane & natural gas
• Easy to install - combo smoke and gas alarm is powered by a 120VAC wall outlet with 9V battery backup
• Low battery warning feature indicates when the battery needs replacement
• UL Certified, 10-year limited warranty
• Two alarms in one detects carbon monoxide and explosive gas
• Three convenient mounting options
• Digital display and peak level button displays the peak CO level recorded by the alarm since it was last reset
• Battery backup 9 volt battery included
• Kiddes carbon monoxide alarms meet the requirements of Underwriters Laboratories (UL), an independent facility that tests products for compliance with widely-accepted safety standards

Brand new, still in sealed packaging.