Lutron SL-4035SD Sound Level Meter Class 2, SD Card

\nSD Card real time data recorder\nINTEGRATING SOUND LEVEL METER, class 2\nModel : SL-4035SD\n* Real time data logger, save the data into the SD memory card and can be downloaded the Excel, extra software is no need.\n* Frequency and time weighting meet IEC 61672-1 class 2, IEC 60804 type 2, ANSI S 1.43 type 2.\n* Measuring modes : SPL, Leq.\n* Auto range : 30 to 130 dB.\n* Two manual ranges : 30 to 80dB, 80 to 130 dB.\n* A / C frequency weighting.\n* Fast / Slow time weighting.\n* Dot matric LCD with backlight.\n* RS232/USB computer interface.\n* Optional wind shield ball, SB-01.\n* Patented.\n