... IEC 61672 class 1 Meas. Range : 25 dB ~ 130 dB(A) (re. 20 μPa) Freq. Range ... 70 dB Range: 10 ~ 80 dB, 20 ~ 90 dB, 30 ~ 100 dB, 40 ~ 110 dB , 50 ~ 120 dB , 60 ~ 130 dB INPUT ... Mic.: 1/2" Prepolarized Condenser Mic. AWA14423 Sensitivity: approach 50 ... mm coaxial plug ENVIRONMENT Temperature: -10°C ~ 50°C Humidity: 25% ~ 90% (R.H) ...