S7120-7K SMI Control Module(0)No Reviews yet $296.92 Quantity discounts available QuantityPrice SKU: S7120-7K In Stock Available: 13 Quantity -+ Add to Cart Details SMI control module for 7-Series stop & cross arms.Also available as retrofit version for 6-Series p/n S7129Can be used in 6-Series units but connector... Details Back DetailsSMI control module for 7-Series stop & cross arms.Also available as retrofit version for 6-Series p/n S7129Can be used in 6-Series units but connectors have to be cut off & wires spliced. Reviews 0 Back Ratings & ReviewsNo reviews availableBe the first to Write a Review