Digital Sound Level Noise Meter Pressure tester Measurement 30~130dB Decibel Noise Measurement Logger Diagnostic-Tool Descirptions:Plotted graph and recorded data are printableHigh accuracy up to 1.5 dBWith 2 equivalent weighted sound pressure levels A and CFAST / SLOW time weighting selectionAutomatic power off when idle for 10 minutesTested compatible with Microsoft Windows XP / Vista / 7/8/10(32 bit and 64 bits)Specifications: LCD display: 4 digitsLCD size: 2.2 inch (55 mm)Display: 0.5 secretaryMeasuring Level: 30 ~ 130 dB(A) Accuracy: 1.5 dBFrequency Response: 31.5 Hz ~ 8.5 kHzResolution: 0.1 dBSound Level: Level 1: 30 ~ 80 dBLevel 2: 50 ~ 100 dBLevel 3: 60 ~ 110 dBLevel 4: 80 ~ 130 dBLevel 5: 30 ~ 130 dBDynamic Range: 50 dB / 100 dBFrequency Weighting Characteristic: A / CAnalog Graph: 1 dB / 1 bar graphSampling Rate: 20 times / secondPWM Signal Output: duty cycle = 0.01 x dB x 100% / 3.3Dynamic Characteristic (Time weighting): FAST(high speed) / SLOW( speed)Calendar Accuracy: 30 seconds / dayMicrophone: 0.5 inch polarization capacitance microphonePower Supply: 4 x 1.5V AA battery (not include)or USB CablePower Life: about 20 hours continuous use (alkaline battery)Operating Temperature: 0 ~ 40 C (32 ~ 104 F)Operating Humidity: ?80 % R.H.Dimensions: approx. 256 (L) x 70 (W) x 35 (H) mm (10.1 x 2.8 x 1.4 inch)Weight: approx. 308 g (without battery) Package Include: 1 x Professional Sound Level Meter 1 x Sponge Ball 1 x USB Cable 1 x Software 1 x English Instruction M Specifications: Descirptions:Plotted graph and recorded data are printableHigh accuracy up to 1.5 dBWith 2 equivalent weighted sound pressure levels A and CFAST / SLOW time weighting selectionAutomatic power off when idle for 10 minutesTested compatible with Microsoft Windows XP / Vista / 7/8/10(32 bit and 64 bits) LCD display: 4 digitsLCD size: 2.2 inch (55 mm)Display: 0.5 secretaryMeasuring Level: 30 ~ 130 dB(A) Accuracy: 1.5 dBFrequency Response: 31.5 Hz ~ 8.5 kHzResolution: 0.1 dBSound Level: Level 1: 30 ~ 80 dBLevel 2: 50 ~ 100 dBLevel 3: 60 ~ 110 dBLevel 4: 80 ~ 130 dBLevel 5: 30 ~ 130 dBDynamic Range: 50 dB / 100 dBFrequency Weighting Characteristic: A / CAnalog Bar Graph: 1 dB / 1 bar graphSampling Rate: 20 times / secondPWM Signal Output: duty cycle = 0.01 x dB x 100% / 3.3Dynamic Characteristic (Time weighting): FAST(high speed) / SLOW( speed)Calendar Accuracy: 30 seconds / dayMicrophone: 0.5 inch polarization capacitance microphonePower Supply: 4 x 1.5V AA battery (not include)or USB CablePower Life: about 20 hours continuous use (alkaline battery)Operating Temperature: 0 ~ 40 C (32 ~ 104 F)Operating Humidity: ?80 % R.H.Dimensions: approx. 256 (L) x 70 (W) x 35 (H) mm (10.1 x 2.8 x 1.4 inch)Weight: approx. 308 g (without battery) Package Included: 1 x Professional Sound Level Meter 1 x Sponge Ball 1 x USB Cable 1 x Software 1 x English Instruction M