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...
October 29, 2012. Carbon Monoxide Detectors: Guaranteed to Fail in 7 Years. To help prevent illness and death, some states require carbon monoxide alarms to be installed in various parts of your home. Kidde is one of the large, recognized brands of smoke alarms and other fire prevention products. Certain of their carbon monoxide detectors, however, come with conflicting promises and warnings.