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...
I Have a Carbon Monoxide Detector Beeping in My Home. (For Carbon Monoxide Detectors for your home go here.) This is by far the most likely place you will encounter a carbon monoxide alarm. To be prepared for this possibility, you should do a little research when you first install your CO detector.