Pressure Module, Reference, Pressure Range -12 to 300 psi (-80 to 2000 KPa), Vacuum -12 psi, Total Uncertainty 0.020 Percent, High Side Compatible With 316 Stainless Steel, Fitting Material Stainless Steel, For Use With Fluke Calibrators, NIST Traceable Calibration Certificate, Includes Adapters, Certificate of Calibration, Manufacturers Warranty Length 3 yr.