Digital Sound Level Noise Meter Measurement 30-130dB dB Decibel Detector Audio Tester Metro Diagnostic-Tool Smart Sensor ST9604 now in stocks and we can send them in fast time
and the special features is as below for your reference:
1) Measurement range : 30~130dB.
2) Frequency weighting : A weighting
3) Maximum and Minimum value hold function.
4) Data Hold function.
5) Red back light alarm and sound alarm.
