The device is a professional digital manometer with a high-precision, wide-range, high-resolution, large-screen display and indoor temperature measurement. Features: 11 Selectable Units for Measurement: including inH2O, psi, mbar, kPa, inHg, mmHg, oz/in2, ftH2O, cmH2O, Kgcm2, and Bar, convenient for use. Clear Digital Display: large LCD display with backlight ON/OFF, providing clear reading. Data Hold: more convenient for checking the data and writing it down. User-friendly Indicator: low battery indicator, pressure unit indicator, and Error codes for out of range indication. Reliable Quality: designed with imported pressure sensors, high precision ADC and low-power MCU. MAX/MIN Function: press the MAX/MIN button to view the maximum, minimum, and average values recording. Wide Applications: can be used in detecting pressure in natural gas pipelines, refrigeration and ventilation systems of air-conditioning, mechanical hydraulics, plastic molding, ceramic product manufacturing, biopharmaceutical molding, mining area, petrochemical smelting, etc. Specifications: Model: FU-P1 / FU-P2 (Optional) FU-P1: InH2O Range: 4.014; Resolution: 0.001 Mbar Range: 10.00; Resolution: 0.001 KPa Range: 1.000; Resolution: 0.001 Pa Range: 1000; Resolution: 0.1 FtH2O Range: 0.334; Resolution: 0.001 MmH2O Range: 101.9; Resolution: 0.01 MmHg Range: 7.500; Resolution: 0.001 InHg Range: 0.295; Resolution: 0.001 FU-P2: InH2O Range: 55.40; Resolution: 0.01 Psi Range: 2.000; Resolution: 0.001 Mbar Range: 137.8; Resolution: 0.1 Kpa Range: 13.79; Resolution: 0.01 InHg Range: 4.072; Resolution: 0.001 MmHg Range: 103.4; Resolution: 0.1 Oz/in2 Range: 32.00; Resolution: 0.01 FtH2O Range: 4.612; Resolution: 0.001 CmH2O Range: 140.6; Resolution: 0.1 Kgcm2 Range: 0.140; Resolution: 0.001 Bar Range: 0.137; Resolution: 0.001 Material: ABS Accuracy: FU-P1(1.5FSO); FU-P2, Repeatability: 0.25%FSO Response Time: 0.5 second typical Over Range Indicator: EER1 or EER2 Auto Power-off: 15 minutes Operating Conditions: 0~50(32~122) Storage Conditions: -10~60(14~140) Power Supply: 1 * 9V 6F22 battery (NOT included) Item Size: 160 * 55 * 34mm / 6.30 * 2.17 * 1.34in Item Weight: 147g / 5.18oz Package Weight: 261g / 9.21oz Package Size: 18 * 10 * 4cm / 7.09 * 3.94 * 1.57in Packing List: 1 * Manometer 2 * Flexible Tube 1 * Manual (English)