This sound meter can read between 30dB~130dB, while reducing the effects of wind noise to produce more accurate readings. 

Applications includes: Environmental measurement, law enforcement, work place design, sound level analysis of machinery and engines.

Features
Auto Ranging
Frequency weighting: A/C
Fast/Slow time weighting selection
Max Hold function
Bar graph display
AC/DC function
White Backlight
Over / Under indicator
Low Battery Alert
Tripod Mount (Tripod not included)
with USB cable for power supply
CE Certified & RoHS Compliant

Specifications
Standard applied: IEC651 type 2, ANSI S1.4 type 2
Calibration sound source: 94dB @ 1kHz
Measurement range: 30~130dBA
Accuracy: ±1.5dB(reference sound pressure standard, 94dB@1KHz)
Frequency response: 31.5~8.5KHz
Resolution: 0.1dB
Analogy bar graph: 2dB/1 Bar graph increment
Display update time: 2 times/second (FAST), 1 time/second (SLOW)
AC signal output: 4Vrms/ full barograph, output impedance is approx 600 ohm
DC signal output: 33mV/dB
Sampling rate: FAST (125ms / SLOW (1s)
Dynamic characteristic: FAST (high speed) / SLOW (low speed)
Power supply: 4 x AA Size 1.5V battery or USB Power Cable 
Item Weight: 7.4 ounces
Product Dimension: 9 x 2.5 x 1.5 inches
Shipping Weight: 13.6 ounces
Shipping Dimension: 9.6 x 4 x 2 inches 

Set Includes
1 x Sound Level Meter
1 x English User Manual
1 x AC/DC line
1 x USB Power cable
4 x AA Battery
1 x Carrying Pouch