Feature:1. Highaccuracy barometer, equipped with backlit LCD display, simple operation and clear reading.2. It can measure the maximum, minimum and average values, with data retention function.3. Digital differential pressure meter, which is a good helper for HVAC technicians and operation and maintenance.4. Various units of KPa, mmHg, InHg, Psi, Mbar, Bar, Ozin, Kgcm, InHO, FtHO, CmHO are available to meet needs of industries in different countries.5. Suitable for measurement and onsite inspection of ventilation and air conditioning systems, clean room, or any gas pressure system troubleshooting.Specification:Item Type: Differential ManometerMaterial: ABSModel: SW-512AMeasuring Range: 3.45KPAAccuracy: 1%FS, Maximum Error 35PaLimit The Maximum Pressure: 6.89KPaRepeatability: 0.25%FSResponse Time: 0.5SPressure Connector: 1/8in (3.18mm) Quick ConnectorWorking Temperature: 0-40, 10%-80%RHStorage Temperature And Humidity: -10-60, 10%-90%RHOver-Range Prompt: Err1 or Err2Power Supply: 3 x 1.5V AAA Battery (Battery Not Included) Measuring Range and ResolutionModelSW-512AUnitRangeResolutionKPa3.450.01MmHg25.90.1InHg1.0180.001Psi0.5000.001Mbar34.50.1Bar0.0340.001Ozin8.000.01Kgcm0.0350.001InHO13.840.01FtHO1.1530.001CmHO 35.20.1How to Use:1. Install the battery (3 x 1.5V AAA dry battery, not included)2. Press the power button3. Connect the hose to the adapter and port, and connect the adapter to the place where the air pressure needs to be tested4. According to the unit needs of different regions, press the button according to the UNIT unit conversion, DLF difference, recording mode, etc. .Package List:1 x Differential Manometer (Battery Not Included)4 x Plastic Hose2 x Quick Connector1 x Bag1 x ManualNote: