Sensor Mounting Brackets: Bracket Type - Photoelectric Sensor Mounting; Shape/Configuration - 90- degree; Bracket Mounting - 2 x Holes; Sensor Mounting - 4 x Curved Slots; Material - Zinc Plate, 11 Gauge; Dimensions - 2.12x0.82x0.70" (54x21x17.9mm); Additional Information - Finish: Chromate Dip; Manufacturer Series - Mini-Screen