The CDX-W30A from Optex AOC is a Laser Displacement Sensor with Measure/Sensing Distance 30 mm ±5 mm, 25.5 mm ±3 mm, Wavelength 655 nm, Sampling Rate 12.5 µs, 25 µs, 50 µs, 100 µs, 200 µs, 500 µs, 1 ms, Auto, Resolution 0.25 µm, Supply Voltage 12 to 24 VDC. More details for CDX-W30A can be seen below.