Feature:1. Professional Manometer: it can test the differential pressure of areas and pipes, wind velocity of pipeline. It has +/-2Psi(kPa) pressure range and +/-0.3% accuracy.2. Clear Display: 2.4-inch LCD screen with backlight display for easy reading.3. 12 Selections of Measuring Unit: Pa, psi, kgfcm2, bar, inH2O, ftH2O, inHg, mmHg, ozin2, mbar, cmH2O, kPa.4. Other Features: Max./Min./Average value measurement function; calibration, data hold and zero function.5. User-friendly Prompt: low battery indication, Hi and Lo over range indicator.Specification:Features:Professional Manometer: it can test the differential pressure of areas and pipes, wind velocity of pipeline. It has +/-2Psi(kPa) pressure range and +/-0.3% accuracy.Clear Display: 2.4-inch LCD screen with backlight display for easy reading.12 Selections of Measuring Unit: Pa, psi, kgfcm2, bar, inH2O, ftH2O, inHg, mmHg, ozin2, mbar, cmH2O, kPa.Other Features: Max./Min./Average value measurement function; calibration, data hold and zero function.User-friendly Prompt: low battery indication, Hi and Lo over range indicator.Low Power Consumption & Power Saving: powered by 3pcs AAA batteries(NOT included), and it will automatic power off after no operation for 10 minutes.Compact Size & Lightweight: easy to operate and carry, it also comes with a protective pouch.Wide Applications: applied on chemical industry, electrical industry, nuclear industry to measure the difference of air pressure, etc.Specifications:Material: ABSPressure Range: ±2.000PsiMeasuring Unit: Pa, psi, kgfcm2, bar, inH2O, ftH2O, inHg, mmHg, ozin2, mbar, cmH2O, kPaAccuracy: ±0.3% FSO (at 25)Repeatability: ±0.2% (max.±0.5%FSO)Linearity/Hysteresis: ±0.29% FSOData Storage: 99 groupsRespond Time: 0.5sOut of Range Indicator: Hi or LoAuto-off: No operation for 10 minutesOperating Temperature: 0~50 / 32~122Storage Temperature: -10~60 / 14~140Power Supply: 3 * 1.5V AAA battery (NOT included)Item Size: 167 * 67 * 31mm / 6.57 * 2.64 * 1.22in Item Weight: 158g / 5.58ozPackage Weight: 247g / 8.72ozPackage Size: 20 * 12 * 5cm / 7.87 * 4.72 * 1.97inPacking List:1 * Manometer1 * Metal Connector2 * Plastic Pipes1 * Pouch1 * Manual(English)Package List:1 * Manometer1 * Metal Connector2 * Plastic Pipes1 * Pouch1 * Manual(English)