When you need to record wind speeds over time a data logging Anemometer is just what the doctor ordered. Our three Newest offerings in this category made data logging easy and foolproof thanks to their use of our patented technology for Excel formatting of data stored on SD memory cards. When you plug a loaded SD card into your laptop the data comes alive as an Excel table or graph making trends impossible to miss. Features & Benefits : Includes combination air speed-temperature probe Displays air (wind) speed in meters/second feet per minute kilometers/hr knots (nautical miles per hour) or miles per hour Displays temperature in °F or °C Big (2.5 in. diagonal) front-panel green backlit 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 Jun 21 2011 Specifications : Display: 2.05 x 1.5 in. (52 x 38mm) LCD Parameters Measured: Air speed temperature Measurement Range: For air speed: 0.4 to 30m/sec 1.4 to 126km/hr 0.9 to 78.3 mph 0.8 to 68knots 79 to 6890 ft/min For temperature: 32° to 122°F (0° to 50°C) Measurement Accuracy: For air speed: ± (2% + 0.2m/sec) ± (2% + 0.8km/hr) ± (2% + 0.4 mph) ± (2% + 0.4knots) ± (2% + 40 ft/min) For temperature: ± 1.5°F (± 0.8°C) Data Logging Sampling Time: 1 second to 1 hour Includes : Hard carrying case Combination air-speed temperature probe 2 GB SD memory 1 Year Limited - SKU: GNRL198