Sound Level meter GM1357
This unit was designed according to following standards:
A. International electrician committee standard: IEC PUB 651 TYPE2
B. US national standard: ANSI S1.4 TYPE2
Measuring range: 30~130 dBA 35~130 dBC
Accuracy: ±1.5 dB
Digit & Resolution: 5位 & 0.1 dB
*Frequency response: 31.5Hz ~8.5KHz
*Measuring level: 30~130, 40~90, 50~100, 60~110, 80~130
Frequency weighting characteristic: A & C
Time weighting: FAST/SLOW
Sampling rate: 2times/second
Microphone：1/2 inch polarization capacitance microphone
AC/DC output
Max reading
Overload indication: OVER / UNDER
Low battery indication
Auto power off / Cancel “Auto power off
