The purpose of this article is to inform you how to get a replacement security key for the ClirVU windows.
Unfortunately Fluke Corporation does not have a part number for the security key to order it directly from Fluke.
The keys are manufactured by a company called SouthCo and the model number for the key that works with the CV401 is 29-90-215-10.
The key that works with the CV201 and CV301 is model number 29-90-214-10. You can search on the internet to find them for sale.