Mini USB Sound Noise Level Meter Measure Tester Pressure Decibel 30 ~ 130 Db

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Mini USB Sound Noise Level Meter Measure Tester Pressure Decibel 30 ~ 130 Db

PRODUCT DESCRIPTIONS:

Specifications:
LCD display: 4 digits
LCD size: 2.2 inch (55 mm)
Display: 0.5 secretary
Measuring Level: 30 ~ 130 dB(A) (A-weighted decibels), 35 ~ 130 dB(C) (C-weighted decibels)
Accuracy: ±1.5 dB
Frequency Response: 31.5 Hz ~ 8.5 kHz
Resolution: 0.1 dB
Dynamic Range: 50 dB / 100 dB
Overload Indication: OVER / UNDER
Frequency Weighting Characteristic: A / C
Analog Bar Graph: 1 dB / 1 bar graph
Sampling Rate: 20 times / second
PWM Signal Output: duty cycle = 0.01 x dB value x 100% / 3.3
Dynamic Characteristic (Time weighting): FAST(high speed) / SLOW(low speed)
Calendar Accuracy: ±30 seconds / day
The Maximum Value Holding: MAX
Microphone: 0.5 inch polarization capacitance microphone
Power Supply: 4 x 1.5V AA battery (not include)or USB Cable
Power 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
Package Includes:
1 x Sound Level Meter
1 x Sponge Ball
1 x USB Cable
1 x Software CD

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