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
Accuracy up to +/-1.5dB
Measurement range is 30 to 130dB
Fast/Slow Time weigting selection
Automatic backlight
The maximum value holding function
Auto power of f 10 minutes
A/C Frequency weighting selection
Both AC and PWM signal output are available
Calendar function
4700 data record function
Connect with the PC through USB, provides data record
downloading, real-time data sampling analysis, and printing graph&data functions.
Measurement range 30-130 db