Features [Professional Accuracy] Equipped with a professional vacuum sensor, this digital vacuum gauge offers accurate measurement of vacuum levels and rapid response times. [7/16 Inch 20UNF Interface] The vacuum tester adopts 7/16 inch 20UNF interface, comes with extension connector for easy connection. [Large Screen Display] The vacuum meter features a large screen for real time and intuitive display, with the capability to switch between four different vacuum units for versatility. [More Features] Supports over range protecting and zero setting functions for enhanced usability and accuracy in vacuum measurements. [IP54 Rating] With an IP54 rating, this digital vacuum gauge is water and dust resistant, making it suitable for a wide range of on site testing applications. Spec: Item Type: Digital Vacuum Gauge Material: ABS Maximum Overload Pressure: 72Psi 0.5Mpa Measurement Range: 0-10000Pa, 0~100.00mBar, 0-75.000mmHg, 0~75000Micron Resolution: 0.01 (Measurement Accuracy: 2-100Pa, ±5% reading (at 20℃) Operating Temperature: 0-50℃ (32-122℉) Battery: 3 x AA batteries (not included) Battery Life: Up to 45 hours Units: Pa, mBar, mmHg, Microns Refresh Rate: 0.5 seconds Interface: 1 x 7/16in 20UNF Sensor: 1 x Pirani Sensor Auto Shut Off Time: 10 minutes Backlit Time: 20 seconds Buzzer: 90dB volume, shuts off after 10 seconds Application: Atmospheric environment (cannot be used for measurement in other environments containing refrigerants, etc.) How to Use: Insert batteries and press the button to operate. Package List: 1 x Digital Vacuum Gauge 1 x Connector 1 x Storage Bag Package List 1 x Digital Vacuum Gauge 1 x Connector 1 x Storage Bag