Fermax universal automatic door openers and invisible operation.
Its small size (67mm tall) makes it particularly suitable for both the aftermarket and for new work. Ab includes sliding funcionamientoautomático allowing automatic adjustment function MAX slide latch
The main feature of this opener is that it has automatic operation. That is, he can remember, which makes it possible after having pulstado opening can push the door open. Normally automatic operation requires a "Teton" as colloquially, a small pibote that is within the opener called. This pin, in this opener does not exist. That is why it is called automatic operation and invisible.