Strikes with a solid design in different versions. Asymmetrical structure.
Fail locked operation.
The door can only be opened while a contact is made. In alternating current operation, a humming noise is audible. In direct current operation, there is no noise. When mounting with a throw-open spring or throw-open bolt, the door is opened visibly after a contact is made.

Decide what you need from the following features:

Adjustable latch (FF, FaFix)
Adjustable strike (F, Fix)
Monitoring contact (RR)
Mechanical unlocking (E)
Diode (05)