Summing junction cards are mounted in enclosures rated Class I, Group D; Class II, Groups E,F & G; NEMA 7 & NEMA 9. Each box has 5 holes drilled and tapped for 1/2" conduit size. Screw on cover has O-Ring for NEMA 4 watertight. Also complies with UL Standard 886 and CSA Standard C22.2 No. 30 1970. 1250-4-EXP contains a summing junction card 1200 Series. It is behind a flat screw on lid
for fast access and adjustment. Summing card will connect 2 to 4 load cells.