Redundant
A redundant door drive differs from a standard door drive by integrating two motors and two controllers, with battery and a watch dog management security system. Upon the activation of a fire signal, power failure, door malfunction or if the network power is cut off, the sliding door automatically opens and stays open, unless it is in “locked” or “stop” mode. Doors on evacuation routes are always fitted with an emergency switch that is close to the door and provides an emergency opening.