Sound Level Meter: 1.Resolution:0.1, 2.FUNCTION: SL, Leq, LN 3.DETECTION CHARACTERISTICS: FAST/SLOW Sound Level MeterSTANDARD:GB/T3785, IEC651 Type2SOUND LEVEL:A:30~130dBC:35~130dBLinear:35~130dBDC OUT:0~2VRESOLUTION:0.1ACCURACY:±1dBWEIGHTING:A, C, Linear, FiliterFUNCTION: SL, Leq, LNDETECTION CHARACTERISTICS: FAST/SLOWPOWER SUPPLY:9V 6F22 BATTERYDIMENSION:195X71X32mm Sound Level Meter