Digital Display Vacuum Gauge 72 PSI 0.5 Mpa Multiple Units High Accuracy Electronic Handheld Vacuum Tester Item Type: Digital Vacuum Gauge Maximum Overload Pressure: 72 PSI, 0.5 Mpa Measuring Range: 0-10000 Pa, 0-100.00 mBar, 0-75.000 mmHg, 0-75000 Microns Resolution: 0.01(<10 Pa), 0.0001(<10 mBar), 0.0001(<10 mmHg), 1(< 30000 Microns) Measurement Accuracy: 2-100 Pa: Reading ±5%(at 20℃) Operating Temperature: 0-50℃ (32-122℉) Units: Pa, mBar, mmHg, Microns Sensor: For Pirani Sensor Buzzer Horn: 90 decibels volume, turn off after 10 seconds Battery: 3 x AAA Battery (not included)