Feature:1. [High Precise] This digital differential pressure gauge utilizes a high precise sensor to accurately measure differential pressure, suitable for a wide range of applications, can measure closed pipe wind speed.2. [12 Units] With 12 commonly used pressure units and 2 wind speed units, this gauge provides versatility for users from different industries and countries. The user friendly interface can be displayed in Chinese or English.3. [Customizable Limit Settings] The digital manometer allows users to set upper and lower pressure limits. When the pressure exceeds the set limit, the screen flashes as a visual alert.4. [Practical Function] When measuring wind speed, the differential pressure meter can adjust different air density values (Kg/m3 or lb/ft3), providing accurate readings in different environmental conditions.5. [Convenient Power Management] This differential pressure tester offers both automatic and manual power off modes, allowing users to adapt to different measurement scenarios.Specification:Item Type: Differential Pressure GaugeMaterial: ABSBattery: 9V battery x 1 (not included)Battery Model: 6F22Measurement Range: 0 to 10KPa, 0 to 40.15inH20Resolution: 1Pa, 0.01KPa, 0.01inH20Accuracy: 0.03KPa (0 to 0.30Kpa)0.05KPa (0.31 to 0.1Kpa)(1.5% reading + 0.01Kpa) other ranges0.01inH20 (0 to 0.12inH20)0.02inH20 (0.13 to 0.40inH20)(1.5% reading + 0.04inH20) other rangesMaximum Pressure Limit: 10KPa (exceeding the range will damage the instrument)Repeatability: 0.25%FSMeasurement Response Time: About 0.5 seconds (252)Pressure Connection: 1/8in (3.18mm) quick connectorOperating Temperature: 0 to 40Storage Temperature Range: -10 to 60Overrange Indication: HI (stop using if this indication appears, as it will damage the instrument)Operating Instructions:1. Press the Settings Menu key to enter the system menu.2. View Data: Press the Confirm key to enter, use the up and down keys to view the recorded data during measurement, and press the Back key to exit.3. Overlimit Setting: To use this function, first press the Confirm key in the Overlimit Switch section, then set it to On. After the screen displays Setting Successful, use the up and down keys to set the overlimit values in the upper or lower limit of the data. Press the Confirm button to exit after setting. During measurement, if the measured data exceeds the set overlimit value, the LCD screen of the instrument will flash as a reminder.4. Time Setting: The instrument starts with a default time of 00:00:00 (hour: minute: second). Press the Confirm key to enter. In the time setting, you can set it to the current time. Note: This time setting is only a one time setting after startup and does not have a clock saving function. The time will reset to zero when the instrument is restarted.5. Language Selection: Press the Confirm key to enter. You can switch between Chinese and English language systems according to your needs.6. Auto Power Off: Press the Confirm key to enter. You can choose between 5 minutes, 10 minutes, no power off as needed. Selecting No Power Off means manual shutdown or shutdown due to battery depletion.7. Air Density Setting: Press the Confirm key to enter, press the up and down buttons to adjust the setting parameters, long press the return button to switch density units (Kg/m or lb/ft3). After setting, short press the confirm key to exit.8. Recover Factory Values: Press the Confirm key to enter, select Yes, and the instrument will undergo a initialization. Top my conversation, making it convenient to quickly save and search for content, images, and video links for bookmarking..Package List:1 x Differential Pressure Gauge2 x Hose1 x Storage Box1 x User Manual