Kidde Safety - 21025778
9CO5LP2 Battery Operated Carbon Monoxide Alarm
UL listed, has 5 year limited warranty & alerts user to replace after 7 years of operation. Features test/reset button to test circuitry & reset alarm, LED's-green for normal & red for alarm, battery lockout system-deters covering of battery compartment without installation of batteries, slide-out battery door cover, low battery signal-alerts when battery needs to be replaced & protects even during power outages. Requires 3 AA batteries incl.