The Lascar EL-USB-1 measures and stores up to 16,382 temperature readings over a -35 to +80 °C (-31 to +176 °F) range. The user can easily setup the logging rate and start time ,and down load the stored data by plugging the module straight into a PC's USB port and running the purpose designed software under Windows 98, 2000 or XP. Data can then be graphed, printed and exported too there applications. The data logger is supplied complete with a long-life lithium battery, which will last for at least 1 year. Correct functioning of the unit is indicated by a flashing red, green and orange LEDs. The Data logger is protected against moisture to IP67 standard when the protective cap is fitted.