The Rth30 is a USB humidity and temperature Datalogger. Easy-to-use Datalogger records humidity and temperature with date/time stamp. The Datalogger is designed with a rugged housing and a standard USB connector where stored readings (up to 48, 000 data) are conveniently transferred to a pc in Pdf or Excel® spreadsheet format when plugged in. Additional features include an 8-location Logger bookmark, 6-language options, programmable sampling interval, adjustable alarm, and password-protected security log-in. Large LCD optimizes viewing and the smart LED provides color-coded humidity, and temperature reading status. Includes (2) CR2032 batteries, USB cover (can be used as a stand), wall mounting screw, and built-in hanger.