When you want to periodically disable and block access to a certain room in a building or an entrance door, that’s when you would need to use a Lockout Cylinder. See full document.
Primus XP was released on 11/08/2007 with the following highlights:
The XP is patented until 2024.
Primus XP has the addition of a new #7 fingerpin with a unique angle combined with a new pocke...