Stauff SP 109.5 09.5 ACT GD AS U W5 K 642012 Twin Beta Clamp Kit, 9 1 2 mm Tube OD, Smooth Bore, 316 Stainless Steel, Polypropylene Cushion, Weld On, 2 Lines G3071792 Back Style Curved Back Style Curved 5% RH from 25% to 85% RH Battery Life 1 yr Time Intervals 1 sec to 18 hr Software Required Yes Special Features User Replaceable RH Sensor Item Data Logger Waterproof IP50 Interface USB Compatible With HOBOware or HOBOware Pro AC Adapter no Calibration Certificate Temperature Only Digital Readout yes Alarm User Programmable Remote Probe No Product Type Data Logger Package Quantity 1 For Maximum Outside Diameter 9 1 2 mm NACE SP 0108 2008 System of Measurement Metric Type Anti Corrosion Weld Mount Twin Clamp Country of Origin Germany