Mounting Accessories. Plastic Cover for Optical Indicator Dome. For DSU35 Dual Sensors. Ident. no.: 6901075. Cover for optical indicator dome. Inspection window for indicator with 90° uncovered. Hole pattern on flange 30 Ã 80 mm (30 Ã 130 mm); connection shaft (shaft extension) height 20 mm/max. Ã 30 mm. Mounting screws with US thread for sensor and actuator are included