This unit confirms to the IEC616721 class 2 Max & min measurements Over and under range display A & C weighting Fast & slow response Analog AC/DC outputs for connection to frequency analyzer or XY shaft recorder (AC=1Vrms DC=10mV/dB). This sound level meter is designed for noise project quality control illness prevention and cure and and all kinds of environmental sounds measurement.
1.4 dB AccuracyLevel Range: 30130dBA & C weighting