Kidde 9000216 Carbon Monoxide/Fire/Smoke Combo Alarm, Battery Powered

Kidde uses breakthrough technology on this CO/Fire/Smoke Alarm for a fast response to real fires, including smoldering and fast flaming fires as well as carbon monoxide, while dramatically reducing nuisance alarms. In addition, this intelligent alarm contains a voice warning that clearly states the present danger – smoke or carbon monoxide – announcing “Fire! Fire!” or “Warning! Carbon Monoxide!” It combines the detection capabilities of an ionization smoke sensor with that of an electrochemical sensor. When either sensor notices a potential hazard, it will communicate with the other; and depending on what is detected, the alarm will adjust its smoke sensitivity to better discriminate between a real hazard and a false one.