This door covers the door of the lift; what makes it unique is the fact that it is flush with the wall it is installed into. The lift therefore blends discreetly into any type of room.
The door is not connected electrically to the lift, so it does not depend on the brand of the lift, nor is it subject to problems imposed by regulations. It automatically opens every time the lift door opens, thanks to an optical sensor installed on both doors. To open the door from outside the lift, just bring your hand close to the optical sensor located on the wall.
If necessary (for instance, owing to a power cut), the door can be opened manually without any equipment, by applying pressure on it and sliding it sideways.