With hold-open systems, fire protection doors in your building can be used for barrier-free accessibility. Like a door hold-open device, they keep doors open. In an emergency, they close fire protection doors automatically and safely. The fire protection doors, equipped with a corresponding door closer, are kept open electrically. This remains like this until such time as they are closed manually or (in case of fire) are closed by triggering the smoke switch. GEZE offers complete hold-open systems from a single source for preventive fire protection.