... Gain-10 dB, 0 dB, 10 dB, 20 dB, 30 dB, 40 dB.Range Error: ≤0.1 dB.7Self-generated Noise<18 dB(A), 23 dB(C), 28 dB(Z ... software for noise (S6291 -00303)Filters Center Frequency: 10 Hz~20 kHz25FFT analysis functionFFT analysis software for noise ( ... × 38(D),mm36Weight0.5 kg (include batteries)37EMCType X38Working Temperature-10 ~ 50°c39Relative Humidity25 ~ 90%40Atmospheric Pressure65 kPa ~ 108 kPa ...