Automatic door, comprising a door controller unit for controlling a door, acting on a door drive; further comprising a monitoring system comprising at least two door sensors (12, 32) mounted on two opposite sides of the door, as seen in passage direction, where each of said sensors (12, 32) comprises a scanning unit (16, 36) that monitors a sensor safety area, comprising one inner region and one outer region, and each sensor (12,32) comprises a detection unit (18, 38) connected to the scanning unit (16,36) where the inner region is analysed and a first detection information is generated, and where the outer region is analysed and a second detection information is generated, where the monitoring system comprises at least one evaluation unit (20, 40) that is connected to the detection units (18, 38) and the door controller unit, characterized in that the evaluation unit (20, 40) determines, based on the first detection information and the second detection information of both sensors, that within a predefined timespan no detection occurs within any sensor safety area, where after this predefined timespan of no detection, 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; where 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, where further, once a detection in the outer region or the restricted area of the inner region occurs, the monitoring system is set back to unrestricted "normal" mode. further comprising a monitoring system comprising at least two door sensors (12, 32) mounted on two opposite sides of the door, as seen in passage direction, where each of said sensors (12, 32) comprises a scanning unit (16, 36) that monitors a sensor safety area, comprising one inner region and one outer region, and each sensor (12,32) comprises a detection unit (18, 38) connected to the scanning unit (16,36) where the inner region is analysed and a first detection information is generated, and where the outer region is analysed and a second detection information is generated, where the monitoring system comprises at least one evaluation unit (20, 40) that is connected to the detection units (18, 38) and the door controller unit, characterized in that the evaluation unit (20, 40) determines, based on the first detection information and the second detection information of both sensors, that within a predefined timespan no detection occurs within any sensor safety area, where after this predefined timespan of no detection, 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; where 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, where further, once a detection in the outer region or the restricted area of the inner region occurs, the monitoring system is set back to unrestricted "normal" mode.