effeff 5525 electric motor double bolt
Effeff
Motor double bolts are most commonly used in situations where very high security requirements are present. The double bolt is extended and retracted by electric motor.
The mechanical opening by cylinder is used in emergency cases, e.g. at the time of a power shortage. After use, the electronic function is not working until the lock has not been turned to the starting position.
55 mm backset.
Operation only with an effeff control unit.