The ODS9L2.8/L6X-650-M12 | 50137821 from Leuze is a Laser Displacement Sensor with Measure/Sensing Distance 50 to 650 mm, Wavelength 650 nm, Response Time 1 ms, Resolution 100 µm, Supply Voltage 18 to 30 VDC. More details for ODS9L2.8/L6X-650-M12 | 50137821 can be seen below.