The RH/TempLog let you effortlessly track relative humidity and temperature data for months! It's ideal for shipping or storage, laboratories, factories, cold rooms, greenhouses and more. Press a button to view minimum and maximum readings over the last 1-24 hours / 1-30 days. Point the logger toward an optional IR printer for a hard-copy printout of your data. Or, download data to your computer via the infrared port or cable. Software lets you set sampling rate and create graphs. Software for Datalogger is required for changing logging parameters or downloading to computer. Customize logging parameters: set logging interval, delayed or immediate start, overwrite data or stop when full. Stores 20-character message that lets you "name" device for later identification. This software lets you display your data in a graphic or tabular display. Powerful display options let you zoom in and adjust scale to focus on the most important data. Pinpoint data for quick analysis: point and click to see individual points or the difference between two points. Print or export data for use in popular spreadsheet programs. Order separately below. The compact waterproof and dustproof housing is ideal for busy or rugged areas. Logger also has an external sensor input for an additional sensor. Order separately below. Dimensions 2.8" dia. x 0.9"D. Shpg wt: 1 lb. Specifications: Temperature: Range: -22 to 122 F (-30 to 50 C), Resolution/Display: 1 C / 1 F, Resolution/Data Collect.: 0.5 C / 0.2 F, Accuracy: ± 0.6 C / ± 1.1 F. Humidity: Range: 0 to 100% RH, Resolution/Display: 0.5% RH, Resolution/Data Collect.: 0.5% RH, Accuracy: ± 3% from 0-90 RH, ± 6% from 90 to 100 RH.