MODEL:SL-5868 STANDARD:GB/T3785, IEC651 Type2 SOUND LEVEL:A:30～130dB C:35～130dB Linear:35～130dB DC OUT:0～2V RESOLUTION:0.1 ACCURACY:±1dB WEIGHTING:A, C, Linear, Filiter FUNCTION: SL, Leq DETECTION CHARACTERISTICS: FAST/SLOW POWER SUPPLY:9V 6F22 BATTERY DIMENSION:195X71X32mm