Digital Pressure Temperature Gauge,Number of Valves 2,All HVAC Refrigerants,Number of Hoses 0,0 to 700 PSI,0 to 700 PSI,1 Percent,1/4 In.,Plastic,Calculates Superheat, Subcooling, Pressure, Temperature and Measures Vacuum,Includes 1/4 In. Access Port for Charging System This YELLOW JACKET ManTooth(TM) digital pressure temperature gauge allows you to monitor the vacuum process wirelessly without losing refrigerant (no hoses or manifolds required). Model includes dual non-tethered pressure/temperature gauges, two wired temperature clamps, and an interchangeable vacuum gauge.