Shenzhen Fuzhe Technology Co.,Ltd.

we offer fu-gm1356 usb sound level meter pc, sound level meter rion, decibel readerdetailed product description and product parameters:calibration sound source : 94db at 1khzmeasurement range : 30130dba, 35130dbcaccuracy : (+-) 1.5db(reference sound pressure standard, 94db at 1khz)frequency response : 31.5hz8.5khzresolution : 0.1dbmeasuring level : 30130, 3080, 50100, 60110, 80130dynamic range : 50db100dboverload indication : overunderfrequency weighting characteristic : a and cdigital display : 4 digitsanalogy bar graph : 1db1 bar graphsampling rate : 20timessecondac signal output : 4vrmsfull bar graph, output impedance is about 600 ohmpwm signal output : duty cycle=(0.01xdb value)3.3*100%dynamic characteristic : fast(high speed)slow(low speed)calendar accuracy : +-30 secondsdaydata storage quantity : 4700the maximum value holding : maxauto power off : 10minutes without operationmicrophone : 12 inch condenser microphonepower supply : 6v(4pcs* 1.5v alkline battery)dimension : 70*35*256mmunit weight : 244g(without battery).