Benetech GM1356 Sound Level Meter 30~130dBA 35~130dBC 31.5Hz~8.5KHz AC/PWM output USB data to PC

Features 1.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 2.Accuracy up to +/-1.5dB 3.Measurement range is 30 to 130dB 4.Fast/Slow Time weigting selection 5.Automatic backlight 6.The maximum value holding function 7.Auto power off 10 minutes 8.A/C Frequency weighting selection 9.Both AC and PWM signal output are available 10.Calendar function 11.4700 data record function 12.Connect with the PC through USB, provides data record downloading, real-time data sampling analysis, and printing graph&data functions. Specifications Calibration sound source      94dB@1KHz      Measurement range      30~130dBA、35~130dBC      Accuracy      ±1.5dB（reference sound pressure      standard，94dB@1KHz） Frequency response      31.5Hz~8.5KHz      Resolution      0.1dB      Measuring level      30 to 80 , 50 to 100, 60 to 110,     80 to 130, 30 to 130 Dynamic r