Feature:1. Accurate and Versatile: The digital manometer features a 2.999Psi/20.68Kpa differential pressure sensor with an accuracy of 0.3% FS, making it suitable for measuring gas and air pressure in various applications.2. 12 Selectable Units: With 12 selectable units, including mmHg, inHg, ftHO, and more, this manometer caters to users from different industries and countries, providing flexibility and convenience.3. Data Recording: The manometer can store up to 100 groups of test data, could review and analyze the readings after testing, also has a "return to zero" function for accurate measurements and a low battery reminder.4. High Accuracy: Equipped with a sensitive pressure sensor, offers precise and reliable pressure measurements. with high precision ADC and low power MCU technology for improved accuracy.5. User Friendly: The manometer has an automatic shutdown function to conserve battery power, along with overload indication to protect the device,also allows users to reset all factory settings when needed.Specification:Item Type: Digital ManometerMaterial: ABS, metalBattery: 1x6F22 9V (not included)Measuring Range: 2.999PsiMeasurement Classic; 0.3%FSO(25)Datastores: 100 groupsExceeding The Positive Pressure Range Display: Err0Exceeding The Negative Pressure Range Displays: Err1Power Supply: 9VApplicable Models: For car, industrial equipment, etc.Package List:1 xDigital Manometer2 x Hose1 x Adapter1 x Manual