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ar-814ar-824measuring range30~130dba30~130dba测量范围35~130dbc35~130dbcaccuracy±1.5db±1.5db测量精确度frequency range31.5hz-8.5khz31.5hz-8.5khz频率响应linearity range50db50db动态范围ac/dc output√√ac/dc 信号输出auto power shut off√√自动关机功能low battery indication√√低电显示功能over range indication√√过载提示digit & resolution5digits & 0.1db5digits & 0.1db数位及分辨率time weighting selectionfast/slowfast/slow动态特性选择microphone1/2 inch electret condenser microphone麦克风1/2 英寸电容式麦克风frequency weightinga & ca & c频率加权特性sound measuring level selection√√测量档位选择max hold function√√最大值锁定sampling frequency2 times/sec2 times/sec取样频率 |
general characteristics一般特征power9v (alkaline or dc adapter)6v (4*aa alkaline or dc adapter)供电9v碱性电池或者电源适配器4节1.5vaa碱性电池或6v电源适配器lcd size30*50mm30*50mmlcd尺寸product colorivoryivory产品颜色象牙白象牙白product net weight178g300g(include battery)产品净重product size207*70*29mm265*70*35mm产品尺寸 |
packing information包装包装方式1(中国)彩盒包装彩盒包装标准外箱容量2020标准外箱尺寸55.0*45.0*26.5cm57.0*51.7*23.8cm标准外箱毛重13.96kg10.5kg包装方式2(other countries)blisterblisterstandard quantity per carton2020standard carton size41.0*37.5*33.2cm41.0*37.5*33.2cmstandard carton gross weight5.76kg6.2kg |