First Alert 120v-Bat Dig Co Detector 1039746 408646

First Alert CO615 Plug-In Electrochemical Carbon Monoxide Alarm with Battery Backup and Digital Display alerts you to dangerous carbon monoxide levels. This plug-in carbon monoxide detector operates on a dual-power system with battery backup for continuous monitoring, even in the event of a power outage. The backlit digital screen tells you at a glance what the carbon monoxide and power levels are. The CO detector also features a convenient test and silence button and an end-of-life warning that lets you know when it is time to replace the detector. Designed to work with any standard outlet, and it features battery backup to allow continuous monitoring of carbon monoxide levels in the event of a power outage. Simply place (2) AA batteries in the battery compartment, and if the power goes out, the backup will activate, monitoring carbon monoxide levels even during storms. A low-battery indicator light and alarm will sound when the batteries need to be replaced or are removed. Uses an advanced electrochemical sensor to detect elevated CO levels. This sensor offers increased sensitivity to carbon monoxide even at low levels. In the event of a false alarm, the silence/test button can be used to turn off the CO detector. The large backlit display on the carbon monoxide detector clearly shows the level of carbon monoxide in the room, as well as the power level of the backup batteries. The display is readable even in the dark and casts a calm blue light, making it ideal for use in a bedroom. The 6-foot power cord makes it easy to mount on a wall or position it on a shelf or nightstand.