Specifi cations-407780A Applicable Standards IEC 61672-1, 60651 and 60804 Type 2, ANSI S1.4 Type 2 Accuracy ±1.5dB (ref 94dB@1KHz) Resolution 0.1dB Digital Display 4 digital LCD Measurement Parameters SPL, SPL MIN/MAX, SEL, and Leq Measurement Range 30dB to 130dB..