11in Large Screen Decibel Meter WIFI LED Display Temperature Humidity Sound Level Detector Monitor 30‑130dB Item Type: Sound Level Meter Material: ABS Display Method: LED Screen Atmospheric Pressure: 12.5PSI-15.4PSI Sampling Time: 0.3S Detection Temperature Range: -10-+50℃, ±1.0℃ accuracy Storage Temperature: -10 - 60℃ Operating Environment Or Storage Humidity: 10% - 80% Detection Humidity Range: 20% - 85% (Accuracy: 5%) Charge: 1000mA 5VDC Battery: 1 X 18650 2000 MAh (Shipped With Built-In Battery) Unit: DBA Measurement Range: 30 - 130dBA Accuracy: ±1.5dBA Frequency Range: 50Hz-8.5kHz Frequency Weighting: A Screen Display: 0.1 DBA Sound Meter Level (Unit DB). Green 1: 55.0 Or Less Green 2: 65.0-55.0 Orange 1: 75.0-65.0 Orange 2: 85.0-75.0 Red1: 95.0-85.0 Red 2: 95.0 Or More Level Of Temperature Icons (Unit ℃). Green: 20-30 Orange: Below 20 Red: Above 30℃