Laser photoelectric sensor - O5x700 series - ifm electronic - with background suppression / diffuse reflective / retroreflective
Laser Distance Sensor For IFM O1D108 | eBay
IFM Efector O1D106 Photoelectric Distance Sensor, 0.2 to 10 m Measuring Range, 150 mA Current Consumption, 18 to 30V DC Operating Voltage: Amazon.com: Industrial & Scientific