Assa Abloy 331U80F-----F94 Door opener

The emergency door opener 331U80… (DIN left) and 331U81… (DIN right) is specially designed for use in locking doors during escape routes. They are also suitable for use in fire doors as an additional interlock. Because of the secure unlocking under pre-load (max. 5000 N) these models are used mainly at doors with emergency exit requirements. In lock systems, sound-proof doors and doors, in which pressure on the door opener trap can be expected constructively, the series 331U ensures a safe function sequence.

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