Standards: GB/T3785, IEC651 TYPE2, ANSI ansis1 4type2 Features: SL Leq Measuring Range: A. 40 – 125dB C. 40 – 125dB line. 40 – 125dB filter detection characteristics: Fast/Slow DC output: = 10mV 1dB resolution: 0.1 DB measurement accuracy: 1dB display: LCD display Power supply: V batteries with 6 °F22x1, ro-batteri-inzike-ta- Size: 195x72x31 mm; Weight: 195g (not including probe)