Hold-open function 27
The latch bolt controlled locking pin in the centre of the keeper keeps the electric strike unlocked until the door is opened, even after contact has been made.
Electric strike 27
Adjustable keeper (FF, FaFix®), Fail-locked, Hold-open function
Electric strike 27E
Adjustable keeper (FF, FaFix®), Mechanical unlocking (E), Fail-locked, Hold-open function