Extech 407760 30 dB to 130 dB 31.5 Hz to 8 kHz Sound Level Meter BRAND NEW OPENED BOX Brand Extech Compatible Devices Personal Computer Supported Software Standard USB Audio Recording Software Connectivity Technology USB Number of Channels 1 About this item High accuracy sound level datalogging of up to 129,920 records USB interface for easy setup and data download 30 to 130dB range Selectable data sampling rate 1.4dB basic accuracy We are wholesaler/liquidators. We bought this in a lot of new items to resell. We are counting upon you to know what you are buying and if this item will suit your needs. No returns. Please only purchase this if you agree to those terms. *** PLEASE NOTE! Our store buys and sells a variety of new and used electronics, instruments, tools, antiques and many other items. We do our absolute best to thoroughly test all our merchandise and accurately describe and depict any flaw or defect we find. SHELF:48 SA