Kidde Hardwired Combination Smoke & Carbon Monoxide Alarm with 10 Year Sealed Lithium Backup Battery

Features an alarm/voice message system – warns of hazards: “Fire, Fire” or “Warning Carbon Monoxide”. Intelligent Sensor Technology – Reduces nuisance alarms and offers fast response to real fires. Never change the battery! Sealed 10 year lithium battery. 120V hardwire.