Tenma ST-95 Mini Sound Level Meter with Bluetooth

The ST-95 from Tenma is a 130dB, 8kHz sound level meter with Bluetooth,featuring a 3dB accuracy, 0.1dB resolution and a maximum operating temperatureof 40°C.4 Digits LCD displayMicrophone 1/2 electret condenser microphoneFrequency range: 31.5Hz - 8kHzMeasuring range: LO: 35dB - 80dB Med: 50dB - 100dB Hi: 80dB - 130dB Auto:35dB-130dBFrequency Weighting: A and CBluetooth interface transferring files to portable devicesOperating Temperature and Humidity: 0 °C~40°C, 10%RH~90%RH0.5times/sec display update and auto range selection9V battery power supply12-month limited warranty (view Terms and Conditions for details)Specifications:Frequency Range 31.5Hz ~ 8kHzAccuracy 3dB (under reference condition of 94dB, 1kHz)Range 35 ~ 130dBMeasuring Range Lo: 35dB ~ 80dB Med: 50dB ~ 100dBHi: 80dB ~ 130dB Auto: 35dB ~ 130dBFrequency Weighting A and CMicrophone 1/2" electret condenser microphoneLCD Display 4 digits LCD display with a resolution: 0.1dBDisplay Update 0.5 times / sec.Operating Temperatureand Humidity 0°C ~40°C, 10%RH ~ 90%RHStorage Temperature andHumidity -10°C ~+60°C, 10%RH ~ 75%RHBluetooth YesMax / Min YesAuto Range Selection YesData Hold YesBacklight YesOver Range / Low RangeIndicated YesLow Battery Indicated YesAuto Power Off YesPower Supply One 9V battery