KIDDE AC/DC PLUG-IN CARBON MONOXIDE DETECTOR WITH 9-VOLT BATTERY BACKUPThe Kidde AC/DC carbon monoxide alarm uses advanced electromechanical sensing technology to monitor for carbon monoxide levels. Its clean, low-profile design includes two LED lights—green for normal operation and red for alarm mode.^^Easy Installation^This Kidde AC/DC carbon monoxide alarm plugs directly into any standard wall outlet, making installation quick and easy. It provides complete protection after installation thanks to its 9V battery backup. The battery backup ensures CO detection even during power outages, which is when many CO incidences occur.^^Features|Low Battery Hush®||Silences Low Battery Chirp Warning for up to 12 Hours||Maintains Protection without Having to Replace the Battery at an Inconvenient Time|Battery Pull Tab||Eliminates Battery Installation Time and Keeps Battery Fresh|Loud 85db||Alerts Users When Deadly CO Gas Is Present|Test/Reset Button||Tests the Alarm’s Electronics and Resets the Unit during an Alarm|Green LED||Indicates Alarm Is Receiving Power and Operating Properly|Red LED||Indicates When Detector Is in Alarm Mode^^Tamper-Resistant^There is a tamper-resistant feature that deters tampering and/or theft of the unit. It’s great for users that are concerned with theft or the dangers to small children.^^This feature alerts users if the unit has been unplugged or if it has come loose from the wall outlet. If either of these things happen, the unit goes into constant alarm mode.^^Warranty Information^Backing this unit’s quality design is its ten-year limited warranty. The warranty provides users with financial protection should something happen to the unit.