Jasper Electronics designs and manufactures traffic control power supplies which are fully-compliant to California DoT (CalTrans) Transportation Electrical Equipment Specification (TEES) for use in Caltrans TEES 332, 334, 336, 342, 344, and 346 Series cabinets. Jasper also offers compliant units for use in advanced transportation controller high-voltage cabinets, Nema cabinets, traffic intersection control systems, modern LED road signs and other related applications.