A must for anyone involved with food preparation or storage. This USB datalogger logs up to 32000 readings (16000 temperature, 16000 humidity) in intervals of 2 seconds to 24 hours per reading. You simply set up the recording parameters you want with the included software then download the data when you need it. The datalogger records at the prescribed intervals and will flash an alarm LED if the user-defined minimum or maximum temperature is exceeded. A mounting bracket is included with screw or self-adhesive attachment. Countless applications including greenhouses, museums, warehouses, container storage, photography, archives, food preparation etc. Note: When the device is plugged in and detected by your operating system please manually choose a specific location for the driver then select the directory of your unzipped files. (SilabsBulk.inf) The Windows 7 driver is now available. Please note it is only compatible with units built since May 2012. To verify that your device qualifies, ensure that its serial number follows the format, 1106XXXX. Measurement cycle: 2s - 24hr Relative Humidity : true Relative humidity range : 100% RH Humidity measure accuracy +/- : 3.0% Sample memory : 32000 Measures in Celcius : true Outdoor / Exterior Scale : -40.000000 degrees Celsius, 70.0 degrees Celsius Measures in Fahrenheit : true Outdoor / Exterior Scale : -40.000000 degreesF, 158.0 degreesF Thermometer Resolution : 0.1 degrees Celsius Display Type : LCD Display Backlight : Not Backlit Confirmed Compatible Operating Systems : Windows XP, Windows 2000, Windows Vista Length : 100.0mm Width : 22.0mm Height : 20.0mm Battery runtime : 52.0wk Battery runtime conditions : 5 seconds rate