Electrical Definitions. Sealable Equipment. Equipment enclosed in a case or cabinet that is provided with a means of sealing or locking so that live parts cannot be made accessible without opening the enclosure. The equipment may or may not be operable without opening the enclosure.
How long does a Carbon Monoxide Alarm last? First Alert alarms are warranted for 5 years, then it should be replaced with a new CO Alarm. SensorPack Modules and batteries should be replaced as needed for those alarms requiring them. Source(s): http://www.firstalert.com/CarbonMonoxide...
A hard-wired smoke or carbon monoxide (CO) alarm is a detector that is wired to 120V household electrical circuit and connected to other detectors throughout your home. Hard-wired smoke and carbon monoxide alarms sound simultaneously, on all levels of your home, when a single unit detects smoke or gas.