Calibrating sound source: 94dB @ 1kHz
Measuring range: 30-130dBA (Auto-ranging)
Accuracy: ±1.5dB (reference sound pressure standard 94dB @ 1KHz)
Frequency response: 31.5-8.5KHz
Resolution: 0.1dB
Frequency waiting: A/C
Analogy bar graph: 2dB/1 Bar graph

Display update time: 2 times/sound (Fast) 1 time/sound (Slow)
AC signal Output: 20 mVrms/full Barograph: output impedance is approx 600 Ω
DC signal Output: 33mV/dB
sampil Sampling rate: Fast (125ms)/Slow (1Sec.)
Power supply: 6V (4×1.5V AA Battery