Lutron SL-4036SD Sound Level Meter , SPL/Leq, Class 1, SD Card

\nSD Card real time data recorder\nSOUND LEVEL METER, class 1\nModel : SL-4036SD\n* Real time data logger, save the data into the SD memory card and can be downloaded to the Excel, extra software is no need.\n* Frequency and time weighting are designed to meet IEC61672 class 1. IEC 60804 type 1, ANSI S 1.43 type 1.\n Measuring modes : SPL, Leq.\n* Auto range : 30 to 130 dB.\n* Two Manual ranges : 30 to 80 dB, 80 to 130 dB.\n* A/C frequency weighting.\n* Fast/slow time weighting.\n* Dot matrix LCD with backlight.\n* RS232/USB computer interface.\n* Optional wind shield ball, SB-0\n* Power by UM3/AA ( 1.5 V ) x 6 batteries or DC 9V adapter.\n* SD card capacity : 1 GB to 16 GB.\n* Optional acquisiting softwares : SW-U801-WIN, SW-E802.\n* Microcomputer circuit, high accuracy.\n* Patented.\n