[ใหม่] เครื่องวัดความดังเสียง Accurate Digital Sound Level Meter

FEATURES: Conformed to the IEC 651 Type 2 and ANSI S1.4 Type 2 set standard  Wide Measuring Range: 40 ~ 130 dB  With 2 equivalent weighted sound pressure levels A and C  Fast and Slow dynamic characteristic modes  Bar graph indication for Sound Level Range  Maximum hold function  Large LCD screen with 4 digits reading  MAX/MIN QUASI-ANALOG BAR INDICATOR  AUTO/MANUAL RANGING SELECTION  Fast & Slow response selectable  Auto power off : 20 min after non-operation  Low battery indicator  Monitor the sound levels from traffic noise, alarm systems and workplace machinery measurement frequency range: 300Hz ~ 8K Hz quasi-analog bar indicator 1dB display steps, 30dB dosplay range updated every 50ms measurement level ranges 4 ranges: 40~70dB, 60~90dB, 80~110dB, 100~130dB meas. level A weighting 40dB~130dB meas. level C weighting 45dB~130dB accurary ±2dB(at 94dB, 1K Hz) microphone 10mm(Dia) Electric Condenser Microphone Digital Disolay 3.5" LCD 0.1 resolution updated every 0.5 sec Power: 1x9V battery (inclued) Package included: 1x Sound meter 1x User manual (in english) 1x 9V battery

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