Allen-Bradley 1746-OV8 SLC 500 8-Channel DC Sinking Output Module By wayne No Comments on Allen-Bradley 1746-OV8 SLC 500 8-Channel DC Sinking Output Module 2 Min Read Buy the Allen-Bradley 1746-OV8 SLC 500 output module. It features 8 sinking channels with 10-50VDC range and 1.0A per point.