120V, AC/DC, Hardwired Carbon Monoxide Alarm, With 9V Battery Back Up, Electrochemical Carbon Monoxide Sensor, Latching Alarm Indicator, 2 Silence Features, Intelligent Sensing Technology, Dust Cover, Easy Installation/Maintenance, End Of Life Signal, Single Button Test/Silence, Meets Codes Where Carbon Monoxide Alarms Are Required For New Construction, 10 Year Carbon Monoxide Sensor, 10Year End Of Life, 10 Year Limited Warranty.