Pepperl+Fuchs UB300-18GM40-U-V1 ultrasonic distance sensor. M18 threaded barrel, 30 mm to 300 mm sensing range, 0-10 V analog output, M12 4-pin connector. IP67 rated. Applications: fill-level detection in bins and tanks, part-presence sensing, distance measurement in factory automation. Interchange to Sick UM18 series and Turck RU30 series in comparable configurations.