Dual & differential inputs Measurements in air or non-corrosive and non-ionized gases & liquids Integrated sensor Single lug for pipe connection Push button selectable display units: (mbar, psi, Kg/cm2, Thermometer mm Hg, inch Hg, meter H2O, inch H2O, Atmosphere) Auto shut off Front panel offset zero button Large LCD display with contrast adjustment for best viewing angle Records Maximum & Minimum readings, with Recall Data Hold function for storing the displayed value Built-in low battery indicator