First Alert Plug-In Carbon Monoxide Alarm with Battery Backup Type:Carbon Monoxide Alarm Both offer durable high-grade tool

Both offer durable high-grade tool steel blades

This smoke alarm is available in a 6-piece cut case with tray for easy display as well as a 6-piece bulk pack for contractors and property owners

With a length of 24"

Do not use in pressure applications

First Alert Plug-In Carbon Monoxide Alarm with Battery Backup Type:Carbon Monoxide Alarm Both offer durable high-grade toolThe First Alert CO606 Carbon Monoxide Plug In Alarm with battery backup features an electrochemical CO sensor to alert you to carbon monoxide. This carbon monoxide detector plugs into any standard electrical socket to monitor CO levels in your home. The simple, user friendly design features battery backup to allow for continuous monitoring, even in the event of a power outage. Battery backup allows for continuous monitoring during power outages Single