Product_description: ["Accurately measures temperature and relative humidity of a fluid, including dew point/wet bulb temperature of ambient air. Features &amp; Benefits : Four-function instrument measures temperature/humidity, dew point, wet-bulb temperature and surface temperature Big (2.5 in. diagonal) front-panel greenbacklit LCD is easy to read Displays maximum and minimum readings and holds any reading Automatically logs measurements at sampling time settable from one second to one hour Also supports manual data logging and changing of SD card storage location Auto power off functionSpecifications : Display: 2.05 x 1.5 in. (52 x 38mm) LCD Parameters Measured: Temperature,relative humidity (R.H.), dew point, wet-bulbtemperature Measurement Range: For temperature: 32¡ to 122¡F (0¡ to 50¡C) For R.H.: 5 to 95% For dew point: -13.5¡ to 120.1¡F(-25.3¡ to 48.9¡C) For wet-bulb temperature:-6.9¡ to 122¡F (-21.6¡ to 50¡C) Measurement Accuracy: ± 1.5¡F (± 0.8¡C) for temperature Sum of temperature and humidity accuraciesfor dew point and wet-bulb temperature Storable/Recallable Readings: Min/Max Operating Temperature:32¡ to 122¡F (0¡ to 50¡ C) Operating Relative Humidity: 0 to 85% Dimensions of Meter:6.97 x 2.68 x 1.77 in. (177 x 68 x 45mm) Weight of Meter: 1.08 lb. (489g) Power Source: 6 AA batteries or optional9-VDC AC adapterIncludes : Soft carrying case Temperature-humidity probe 2 GB SD memory card Users manual 1 Year Limited Warranty DIMENSIONSPackage Specifications =H: 10.625'' W: 5.75'' D: 2.75'' Cube: 0.0972 Weight: 21oz Weight: 1.3125lbsShelf Pack Specifications =H: 10.625'' W: 5.75'' D: 2.75'' Cube: 0.0972 Weight: 21oz Weight: 1.3125lbsMaster Pack Specifications =METRIC DIMENSIONSPackage Specifications =H: 269.875mm W: 146.05mm D: 69.85mm Cube: 2.46888 Weight: 595.339985625gr Weight: 0.595339985625KgShelf Pack Specifications =H: 269.875mm W: 146.05mm D: 69.85mm Cube: 2.46888 Weight: 595.339985625gr Weight: 0.595339985625KgMaster Pack Specifications =", 'Datalogging Thermo-Hygrometer W/ Excel Formatted Sd Card (Replaces Dth3009Dl)'] (Page 1)