The camera-based sensor is designed for the compartment fine positioning of chassis (X-axis) and lifting unit (Y-axis) of the high-bay storage device in front of single- or double-depth shelf compartments. Any deviations from the target reference position that occur during absolute positioning are thereby detected. The reference position is defined by simple bore holes or reflectors (markers) in the steel profiles (crossbeams or columns) in the shelf compartments. If the bore hole is located in the working range (image field) of the sensor, it delivers the current position relative to the reference position via the integrated Ethernet TCP/IP or PROFINET interface or via 4 digital switching outputs. When the current absolute and reference positions match, the ideal positioning of the high-bay storage device is reached. Smallest size, simple operation, configuration via the integrated web server or directly on the sensor via configuration codes are just a few of the highlights of this device.