407750:SoundLevelMeterwithPCInterfaceBigbacklitdisplay,PCinterface&backgroundsoundabsorberFeatures:MeetsANSI&IEC651Type2standa***Backgroundnoiseabsorberformachinenoisemeasurementsfiltersambientnoise30to130dBmeasurementrangewith&plu***n;1.5dBaccuracyLargedisplaywithbacklightingandanalogbargraphMIN/MAX,Auto/ManualRangingAnalogAC/DCoutputsforconnectiontoarecorder欢迎订购EXTECH407750数字分贝计/声级计/噪音测试仪13420947400,)