Digital Db Sound Level Meter Decibel Noise Meter Gm1357 Plus With Lcd

GM-1357 30~130 dB Digital Sound Pressure Level Noise Decibel Meter Tester
This high-precision high quality high accuracy Sound Level Meter (30 to 130 Decibels) has been designed to meet the measurement requirement of Safety Engineers, Health, Industrial Safety offices and Sound Quality control in various environment. Great for noise pollution monitoring. It provides a reliable, accurate and fast way to measure sound level and calculate the decibel of factory, office, traffic, home theater setup, health and safety compliance, vehicle noise testing and audio system. Also measures both A & C frequencies to get the right response for the human ear, as well as fast or slow responses to get an "ambient" reading or a short noise. Additionally, it's extremely easy-to-use. Just press one button and results will be displayed instantly on the screen, and simply setting the range, the accurate decibel can be calculated.
Features

Designed according to International Electrician Committee Standard
IEC 651 TYPE 2
ANSI S1.4 TYPE 2
Wild Measurement Range: 30-130dB
High Accuracy: up to ± 1.5dB
Windscreen/sponge ball to filter-out unwanted signals
With Bar graph & Overload Indication (Over/Under)
With 2 equivalent weighted sound pressure levels A and C
A frequency weighting for general sound level measurements
C frequency weighting for checking the low-frequency content of sounds
AC & DC analogy signal output are available connecting to frequency analyzer level recorder, FFT analyzer and graphic record
Large LCD screen with digits reading
Fast and Slow dynamic characteristic mode
Maximum value hold function to lock up the maximum reading
Auto power off design for energy saving
Dynamic sound level ranges & battery life indication
Portable and easy to use
Factory pre-calibrated
Specifications

Measuring Level: 30-130dB (A) , 35-130dB (C)
Level Ranges:
30-80dB
50-100dB
60-110dB
80-130dB
30-130dB
Accuracy: ±1.5dB (under reference conditions)
Resolution: 0.1dB
Frequency Range: 31.5Hz to 8.5KHz
Linearity Range: 50dB/100dB
Bar Graph
50dB scale at 1dB step for monitoring current sound pressure level
Sample Rate: 20times/second
Overload Indication: OVER/UNDER
Frequency Weighting: A and C
Digital Display: 4 digits
AC Signal Output: 0.707Vrms at FS output impedance approx. 600Ω(ohm)
DC Signal Output: 10mV/dB, output impedance approx. 100Ω(ohm)
Time Weight: FAST / SLOW
Microphone: ½" Condenser microphone
Max hold function: Yes
Operating Condition: 0~40°C, 10~80%RH
Storage Condition: -10~60°C, 10~70%RH
Power Supply: 4 x AA 1.5V alkaline battery (included) or DC 6V 100mA ( DC9V) (not included)
Battery Power Life: About 30 hours (alkaline battery)
Size: 256 x 70 x 35mm
Weight (Meter with Sponge Ball/Windscreen Filter): 230g (excluding batteries)