Measurement range 0-150 dB or 0-150 %
Detect head (Microphone) impedance About 600 ohm
Frequency 20-20000 Hz
Distance between microphone & audio signal converter(monitor) ≤100 m
Output signal 4-20 mA or 20-4 mA
Tolerance ±0.1 dB
Workable time Continuous, 24hr a day
Ambient temperature - 10 to +55 Deg C
Environmental humidity ≤85%
Power Supply 220 V AC (-10 ~ +10%), 50Hz
Weight About 1 Kg
