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1. An automatic door comprising a door controller unit for controlling the door and acting on a door drive, and further comprising a monitoring system comprising at least two door sensors mounted on opposite sides of the door in a passage direction, each of said sensors comprising a scanning unit that monitors a sensor safety area comprising one inner region and one outer region, and a detection unit connected to the scanning unit wherein the inner region is analysed and a first detection information is generated, and wherein the outer region is analysed and a second detection information is generated, and wherein the monitoring system comprises at least one evaluation unit connected to the detection unit and the door controller unit and upon the evaluation unit determining, based on the first detection information and the second detection information of the at least two sensors, and subsequent to a lapse of a predefined timespan wherein no object detection occurs within any sensor safety area, the monitoring system is set to a “restricted mode” in which the first detection information is taken into account only from a restricted area of the inner region and wherein the door controller unit is supplied with a safety signal based on the second detection information or the first detection information of the restricted area of the inner region and the second detection information, and wherein further, once an object detection in the outer region or the restricted area of the inner region occurs, the monitoring system is set back to unrestricted “normal” mode.
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