Features: Professional Manometer: Capable of measuring the differential pressure of areas and pipes, and wind velocity in pipelines. It features a pressure range of ±2 Psi (kPa) and a precision accuracy of ±0.3%. Clear Display: Equipped with a 2.4-inch LCD screen with a backlight for easy reading. 12 Units of Measurement: Choose from Pa, psi, kgf/cm², bar, inH₂O, ftH₂O, inHg, mmHg, oz/in², mbar, cmH₂O, kPa. Additional Features: Includes Max/Min/Average value measurement functions, along with calibration, data hold, and zeroing options. User-friendly Prompts: Offers low battery warning and Hi/Lo over-range indicators. Energy Efficient: Powered by 3 AAA batteries (not included), with an automatic power-off feature after 10 minutes of inactivity to save power. Portable Design: Compact and lightweight, making it easy to handle and carry. Comes with a protective pouch. Versatile Applications: Ideal for measuring air pressure differentials in chemical, electrical, and nuclear industries. Specifications: Material: ABS Pressure Range: ±2.000 Psi Measurement Units: Pa, psi, kgf/cm², bar, inH₂O, ftH₂O, inHg, mmHg, oz/in², mbar, cmH₂O, kPa Accuracy: ±0.3% FSO at 25℃ Repeatability: ±0.2% (max. ±0.5% FSO) Linearity/Hysteresis: ±0.29% FSO Data Storage: 99 groups Response Time: 0.5 seconds Range Indicator: Hi or Lo out of range Auto-off Function: Activation after 10 minutes of inactivity Operating Temperature: 0~50℃ / 32~122℉ Storage Temperature: -10~60℃ / 14~140℉ Power Supply: 3 x 1.5V AAA batteries (not included) Item Dimensions: 167 x 67 x 31 mm / 6.57 x 2.64 x 1.22 in Item Weight: 158 g / 5.58 oz Package Weight: 247 g / 8.72 oz Package Dimensions: 20 x 12 x 5 cm / 7.87 x 4.72 x 1.97 in Packing List: 1 x Manometer 1 x Metal Connector 2 x Plastic Pipes 1 x Pouch 1 x Manual (English)