The Digi-Sense data logging sound level meter provides precision sound decibel measurements for product noise Certification and reduction applications. It conforms to IEC61672-1 Class 2 standards, making it ideal for OSHA and IEC surveys. Unit features a and C weighting capabilities for measuring noise levels from industrial machinery or equipment to residential/commercial environments ensuring noise level standards and compliance. The intuitive interface makes this sound meter easy to set up and use right out of the box. Use the included software to view your sound measurement data in graphical formats as well as record and download data, via USB connectivity, to your PC for further analysis. Additional features include max/min and hold functions, over- and under-range indication, fast/slow response, analogy AD/DC outputs, and USB connectivity. Automatic power-off conserves battery life. Plus the nist-traceable Pre calibration means you get reliable measurements right out of the box, saving you time and money! what's included: windscreen, 3.5-Mm earphone plug, Screwdriver, software, USB cable, three AAA batteries, and nist-traceable calibration report with data supplied by in no cal. Precision accuracy measurements with powerful data logging software reliable measurements, guaranteed! precalibrated to nist-traceable standards meets ANSI and IEC61672-1 Class 2 standards four user-selectable ranges from 30 to 130 db provide additional flexibility expanded memory of up to 32,700 readings included data logging software with graphical display for quick and easy analysis programmable sample rates for a wide range of applications tripod mountable-ideal for field use