Item Type: Sound Level MeterMaterial: ABSDisplay Method: LED ScreenAtmospheric Pressure: 12.5PSI-15.4PSISampling Time: 0.3SDetection Temperature Range: -10-+50, 1.0 accuracyStorage Temperature: -10 - 60Operating Environment Or Storage Humidity: 10% - 80%Detection Humidity Range: 20% - 85% (Accuracy: 5%)Charge: 1000mA 5VDCBattery: 1 X 18650 2000 MAh (Shipped With Built-In Battery)Unit: DBAMeasurement Range: 30 - 130dBAAccuracy: 1.5dBAFrequency Range: 50Hz-8.5kHzFrequency Weighting: AScreen Display: 0.1 DBASound Meter Level (Unit DB).Green 1: 55.0 Or LessGreen 2: 65.0-55.0Orange 1: 75.0-65.0Orange 2: 85.0-75.0Red1: 95.0-85.0Red 2: 95.0 Or MoreLevel Of Temperature Icons (Unit ).Green: 20-30Orange: Below 20Red: Above 30 Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.