AMPROBE – FLUKE , SM-10-A Sound Meter Measuring ranges: A weighting 30 ~130dB C weighting 35~130dB Frequency range: 31.5Hz~8KHz Display with 0.1dB steps on a 4 digits LCD Slow (1 sec) and fast (125ms) response settings to check peak and average noise levels Max/min recording Data Hold to freeze reading on digital display CE, designed to meet IEC651 type2, ANSI S1.4 type2