Universal Security Instruments M Series Plug-In Carbon Monoxide and Natural Gas Alarm with 9-Volt Battery Backup, Model MCN400B

The USI Electric MCND401B M Series Plug-In Carbon Monoxide and Natural Gas Alarm is for those who understand that carbon monoxide and natural gas leaks are silent, invisible threats that you need to protect your home against. This two-in-one alarm protects your home with a dual-sensing alarm and Smart Alarm technology that reduces the occurrence of nuisance alarms. The alarm is also compact and easily installed by simply plugging into an outlet, along with a 9-volt battery providing backup in the event of a power outage. A digital display screen and three-color LED array provide quick updates on carbon monoxide and gas levels. This comes with a limited warranty.