The HL-G103-S-J from Panasonic Corporation is a Laser Displacement Sensor with Measure/Sensing Distance 30 mm ±4 mm, Wavelength 655 nm (Peak), Sampling Rate 200 µs, 500 µs, 1 ms, 2 ms, Resolution 0.5 µm, Supply Voltage 24 VDC. More details for HL-G103-S-J can be seen below.