Kidde Firex Hardwired Combination Smoke and Carbon Monoxide Detector with Voice Alarm and Front Load Battery Door (3-Pack)

This Kidde FireX Smoke and Carbon Monoxide detector can warn clearly of any type of hazard. It is a photoelectric combination alarm built into one unit. It uses a voice and beeping tone to warm of any danger. The 9-Volt battery is included.Smoke and carbon monoxide detectors should be installed in a central location outside each sleeping area, on every level of the home, and in other locations where required by law9-Volt battery backup provides protection during power outagesVoice alarm announces "Fire! Fire!" when a smoke or fire hazard is detected and "Warning! Carbon Monoxide" when CO is detectedSmart hush feature temporarily silences nuisance alarms and low battery chirpsFront-load battery compartment makes it easy to replace the alarm's 9V backup batterySeven years after initial power, the unit will chirp to indicate that it's time to replace the entire unitAlarms are equipped with test/reset button which tests the alarms circuitry and horn and resets memory after an alarm has soundedGreen LED light i...