Wall Mounted Decibel Meter 9.6in LCD Display Screen 30‑130dB Sound Level Meter for Office Item Type: Wall Mounted Decibel Meter Material: ABS Measurement Range: 30-130dB Accuracy: ±1.5dB (based on standard sound source, 94dB at 1KHz) Frequency Response: 31.5 Hz-8.5 KHz Frequency Weighting: A weighting Response Time: FAST (fast) Microphone: 6mm condenser microphone Digital Display: 3 digits Resolution: 0.1dB (<100dB) 1dB (>100dB) Alarm Alert: Support Alarm Output: Support Storage Function: Not supported Communication with PC: Not supported Display: 9.6 in Power Supply: DC5V 1A Type C USB interface Working Temperature and Humidity: 0-40℃, 10%-80%RH Storage Temperature and Humidity: -10-60℃, 10%-70%RH