Benetech GM1357 30 ~ 130 dB Decibel USB Sound Noise Measurement Digital Sound Level Meter

Features:

• Designed according to following standards: International Electrician Committee Standard: IEC 651 TYPE 2 & ANSI 1.4 TYPE 2.
• Wild Measurement Range: 30-130dB.
• Accuracy: up to ± 1.5dB.
• Windscreen for Filter-out Unwanted Signals.
• With 2 equivalent weighted sound pressure levels A and C. AC &
• DC analogy signal output are available connecting to frequency analyzer level recorder, FFT analyzer and graphic record.
• A frequence weighting for general sound level measurements.
• C frequence weighting for checking the low-frequency content of sounds.
• Large LCD screen with digits reading.
• Fast and Slow dynamic characteristic modes.
• Fast rate to pick up the current reading.
• Slow rate to pick up the reading of average within 1 second.
• Maximum value holding function to lock up the maximum reading.
• Equipped with sponge ball.
• Auto power off design for energy saving.
• Portable, easy to use and handy instrument for sound quality control in factory, office, home, school and construction site. 

• Accuracy: 1.5dB (under reference conditions)
• Measuring Level: 30-130dB (A)/35-130dB (C)
• Frequency Range: 31.5Hz to 8.5KHz
• Linearity Range: 50dB/100dB
• Digital Display: 5 digits
• Resolution: 0.1dB
• Bar Graph: 50 dB
• Scale at 1 dB step for monitoring current sound pressure level display
• Overload Indication: OVER/UNDER
• Frequency Weighting: A and C
• Level Ranges: 30-80dB, 50-100dB, 60-110dB, 80-130dB
• Self Calibration Time: 3sec
• Sampling Rate: 20 times/seconds
• AC Signal Output: 0.707Vrms/ full bar graph, output impedance is about 600ohm
• DC Signal Output: 10mV/dB,output impedance is about 100ohm
• Dynamic Characteristic: FAST (high speed)/SLOW (low speed)
• Power Supply: 4x AA 1.5V battery or DC 6V 100mA (not include)
• Microphone: 1/2" Electrinic Condenser microphone
• Item dimensions: 256 x 70 x 35mm
• Item weight: 238g

• 1 * Sound Level Meter
• 1 * Sponge Ball
• 1 * Operation Manual

BATTERY NOT INCLUDED