Technical indicators: Pressure range: -100kPa~60Mpa(customized if other range needed) IP grade: IP65 Accuracy: 0.5%F.S; 0.2%F.S; 0.1%F.S Ambient conditions: Operating temperature:0-50 Relative humidity: 95% Pressure transmission medium: Liquid (gas) compatible with 316L stainless steel Dimensions: 80 mm*34 mm Weight: 0.5 kg Connection: M 20 X 1.5 Others can be customized. Additional function: save the Max value Features: 1. Energy-savinghigh resolution with 4 digits displaybright backlight for using easily in poor lighting conditions; 2. With Small volume,easy operation features, it is easy to be used on site calibration and precision pressure measurement; 3. Intelligent calibration, linear repair, two-second induction zero with magnetic pen ; 4. LCD screen visually displays pressure percentage based on its dynamic pressure value display. 5. Units: mmH2O mmHg kPa MPa mbar bar PSi or other options. 6. Power supply: The two built-in lithium battery can be used for 3-5years. The battery is changeable