Sensor Mounting Brackets: Bracket Type - Photoelectric Sensor Mounting; Shape/Configuration - 90-Degree; Bracket Mounting - 1 Curved Slot, 1 Hole; Sensor Mounting - 1 Slot, 1 Hole; Material - Stainless Steel; Dimensions - 0.68x1.25"x1.67"(17.1x31.8x42.3mm); Use With - World Beam QS18U Series Ultrasonic Sensors; Manufacturer Series - Series QS18U