Features Low battery indication with USB interfaceAuto/Manual power off115 & 140dB indicator(peak)SPL with Hi (140~70), Mid (110~50) and Low dB range (90~30)Connection status display for USB cable, SD card connectionSave, View, Erase & Download recorded/logged dataWeighting: Impulse / fast / slowOver Hi level and under Lo level indicationSingle & auto data recordMeasure % Noise dose and sound level  Specification Measurement Range: 30~130dB (A), 35~130dB (C), 40~130dB (Z)Display: Single LCD MAX reading 999999Display Refresh Rate: 1 Time/secMicrophone: 1/2 inch Electret condenser microphoneMeasurement Items (NDM): Doses%, Lxyp, Lxmax, Lxmin, Lxeq, SEL(LAE), Peak, LAVG, TWA, LEP, LN%Measurement Items (SLM): Lxyp, Lxmax, Lxmin, Lxeq, SEL(LAE), PeakDynamic Range: 60 dBAccuracy: ±1.5dB@94dB 1kHzInternal memory: MAX Datalogger data: 10,000(NDM) surveys, 1,000,000(SLM) readingsMaximum Peak C Weighting Sound Level Measurement : 90~143 dBTime Weighting: Fast, Slow, Impulse, PeakFrequency Weighting: A / C / ZFrequency Range: 20Hz~8kHzStarting Time: <10secOperating Environment: 5~40°C (<80% RH)Storage Environment: -10~60°C (<70% RH)Standard: EMC Standards and tested in accordance with EN61326-2 (2006)System Requirements:Operating: Windows® XP/Windows Vista/Windows 7/Windows 8Storage: 200 MB of available hard disk space.Processor: Intel Pentium® 4Memory: 1GB RAM (XP), 1.5GB (Windows Vista/Windows 7/Windows 8) Set Includes 1 x Noise Dose Meter1 x Detachable Microphone with windshield1 x CD Software1 x Mini USB Cable (Mini B type)1 x 9V batteryInstruction ManualCarrying CaseTest Report Certificate
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