Features 1、Dual Port Manometer: This digital pressure gauge features dual port design, making it easy to measure positive and negative, and differential pressures, suitable for air and gas system. 2、Range and Units: The measurement range is ±689kPa, with high accuracy, supporting 11 measurement units of inH2O, bar, oz/in2, psi, mbar, kPa, inHg, mmHg, kg/cm², ftH2O, cmH2O. 3、Backlight LCD: This digital pressure gauge is equipped with a backlit LCD screen, which can be easily viewed in low light conditions, displaying minimum, maximum, and average values. 4、1/8 Inch Connector: This digital manometer is equipped with a 1/8 inch (3.18mm) quick connect fitting, providing stable and reliable connection without gas leakage, you can use it with confidence. 5、Applicable Fields: This air and gas pressure gauge is suitable for measuring the automotive engine intake negative pressure, crankcase negative pressure, brake assist pressure, and pipeline pressure. Specification Item Type: Digital Pressure Gauge Material: ABS, Silicone Battery Type: 1 x 9V Battery (Not Included) Range: ±689kPa 11 Measurement Units: inH2O, bar, oz/in2, psi, mbar, kPa, inHg, mmHg, kg/cm², ftH2O, cmH2O Resolution: 0.01Kpa Accuracy: ±0.25%FS Maximum Pressure Limit: 1034kPa Linearity Hysteresis: ±0.1%FS Full Scale Repeatability: ±0.25%FS Pressure Connection: 1/8in (3.18mm) Quick Connector Operating Temperature: 0-40℃ Storage Temperature: -10-60℃ Over Range Indication: Err1 or Err2 Auto Shutdown: 20 Minutes Application: 1. Intake Negative Pressure in Automotive Repair 2. Crankcase Negative Pressure in Automotive Repair 3. Brake Assist Pressure in Automotive Repair 4. Pipeline Pressure Package List 1 x Digital Pressure Gauge 2 x Hoses 1 x 1/8 Quick Connect Fitting 1 x User Manual 1 x Storage Bag