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 Consumption & Saving: powered by 3pcs AAA batteries(NOT included), and it will automatic 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 pressure, etc.Specifications:Pressure 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 / 14~140 Supply: 3 * 1.5V AAA battery (NOT included)Material: ABScolour: Black+RedPackage Contents:1 x Manometer1 x Metal Connector2 x Plastic Pipes1 x Pouch1 x Manual(English)Only the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.