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...
How Long Do Smoke and Carbon Monoxide Detectors Last? While the importance of them is widely known, smoke and carbon monoxide detectors often become afterthoughts once theyâre installed. Typical homeowners will put the detectors up, see them hanging there on the wall, and feel safe.