Holdpeak Misuratore di livello sonoro digitale decibel tester di rumore barra grafico 30 ~ 130 dB 882A
AC/DC: AC and DC signature output for frequency analyzer level recorder, FFT analyzer, graph recorder, etc. 🎧 【A / C switch】 Frequency weighting selection switch A / C switch. dBA is the amount of noise that the human ear feels.