Digital Vacuum Gauge, 0-75,000 Microns HVAC Vacuum Pressure Meter with 7/16"-20UNF, Vacuum Pressure Gauge with 1/4" SAE Extension Connector and T-Connector, with Buzzer Alarm

How to use-Power On: Press and hold the power button until the display lights up to complete startup.-Set Alarm Value: Set the alarm value. If the vacuum level drops below this set value, the buzzer will sound, and the backlight will flash.-Power Off: Press and hold the power button for 1 second to turn off the device.-Enter Setup Mode: Press and hold the SET button to enter the setup interface, then press the SET button to select the value you want to set. The selected position will flash. -Use the UNIT button to change the flashing number. After setting the value, press the SAVE/CAL button to save.-Backlight On: Press the power button briefly to turn on the backlight, which will automatically turn off after 20 seconds. If no operation is performed within 10 minutes, the device will automatically shut down.-Calibration: When the vacuum gauge starts and preheats, the display will show "---". Press and hold the SAVE/CAL button for 3 seconds until the screen shows "---" to complete full-scale calibration.Note: If not used for a long time, please remove the battery to avoid damage to the vacuum gauge.SpecificationMaterial: Brass, Rubber, PlasticInterface: 7/16-20UNF (1/4" Flare)Maximum Overload Pressure: 14 PSI / 0.1 MpaSensor Refresh Rate: 0.5 SecondsMeasurement Accuracy: 2-100Pa: ±5% of reading (at 20°C)Sensor: PiraniSensorAuto Shut-off Time: 10 minutesBacklight Timeout: 20 secondsRange: 0~10000 Pa, 0~100.00 mBar, 0~75,000 mmHg, 0~75000 MicronApplicable Units: pa, mbar, mmHg, micronsOperating Temperature: 0~50°CResolution: 0.1(<10Pa), 0.0001(<10mBar), 0.0001(<10mmHg), 1(<30000 Microns)Weight: 1.41lbsDimensions: 5.91*7.48*2.56inPackage1 x Vacuum Gauge1 x 1/4" SAE Connector1 x T-connector1 x Carrying Case1 x Manual

• High Precision Measurement: Equipped with PiraniSensor, the measurement accuracy reaches 2-100Pa, ensuring ±5% accuracy of readings at 20°C
• Multi-Unit Switching: Supports multiple measurement units including pa, mbar, mmHg, and microns to meet various measurement needs
• Convenient Operation: Features backlit display, multi-unit switching, and beeping alert tones to simplify the operation process and enhance user experience
• Calibration Options: Full-scale and zero-point calibration for sustained precision
• Monitoring & Alerts: Real-time readings with customizable alerts for safety and precision
• Comprehensive Kit: Includes a digital vacuum gauge, 1/4" SAE connector, T-connector, carrying case, and manual