The VDM28 distance measurement device employs Pulse Ranging Technology (PRT).It has a repeat accuracy of 5 mm with an operating range of 0.2 ... 15 m and an absolute accuracy of 25 mm.The compact housing of the Series 28 photoelectric sensors, with dimensions of 88 mm (height), 26 mm (width) and 54 mm (depth), make it the smallest device available in its class.