Lutron DS-2013SD Noise Meter, SD Card

\nSD card data recorder\nNOISE DOSIMETER\nModel : DS-2013SD\n* Standards IEC61252, ANSI S1.25 for noise dose and sound exposure meters, IEC 61672 Class 2 / ANSI S1.4 Type 2 for sound level meters.\n* A or C frequency weighting.\n* Ranges : 30 to 130 dB auto range. \n* Display : LCD, 0.01-9999%.\n* Criterion Level : 80, 84, 85 or 90dB.\n* Exchange rate : 3, 4, 5 or 6 dB.\n* Threshold level : 70 to 90 ( 1 dB steps ).\n* Response rate : Fast or Slow.\n* Measurement duration : 0/1/5/10/15/30 minutes 1/2/4/8/10/12/24 hours.\n* Microphone :1/2 inch electret condenser.\n* RS232/USB computer Interface.\n* Real time data logger, saving data can export to SD card with Excel file, then user can download it to the Excel, extra software is no need.\n* SD memory card capacity : 1 GB to 16 GB.\n* AC to DC 9V adapter is included.\n* Size: 132 x 80 x 32 mm.\n* Microphone with the clip and the carrying case are included.\n