SMAN Wireless Refrigerant Manifold - Knowledge, power and experience are packed into the SMAN� Refrigerant 4-valve Manifolds. Years of feedback from A/C and refrigeration specialists is combined with Fieldpiece's laser focus on continuous improvement to bring you the toughest, most advanced digital refrigerant manifold on the market. From the extremely rugged overmold casing, reinforced hook, and hermetically sealed sight glass, to the wireless capabilities, data logging, and tightness test, the SM480V is built so you can do your job easier, faster and better.