The effeff 332® closed-circuit door opener, specially designed for use in locking doors in escape routes, is considered the smallest escape door opener in the world with its small installation dimensions.|The compact design of the effeff 332® escape door opener is comparable to a standard commercially available door opener - quick and uncomplicated installation in a wide variety of profiles and frames is therefore guaranteed.|Another advantage is the secure unlocking under preload of up to 3,000N at 100 percent of the holding force in the event of a power cut. This means that the escape door opener also guarantees a safe function on doors without escape route requirements, where pressure on the door opener latch is to be expected. Thanks to its symmetrical design, the door opener can be used universally on the left and right as well as horizontally.|Test certificate (MPA Dortmund) 120002494.10