The USB-502-LCD standalone data logger measures and stores up to 16,379 relative humidity and 16,379 temperature readings over the 0 to 100% RH and -35 to 80Â°C measurement ranges, and calculates dew point. The high-contrast LCD shows a variety of temperature and humidity measurements as well as logger status information. At the touch of a button, users can turn on the LCD display, and cycle through the most recent, the maximum, and the minimum logged temperatures and relative humidity readings. Flashing LEDs indicate logging status, and a user-replaceable long-life lithium battery is included, which can typically allow up to one full year of logging. The USB-502-LCD logger is supported by USB-500 Series Data Logging Application software, included with the package. The intuitive software is used initially to configure the logger, program alarm thresholds, logging rates, start times, and measurement units, etc.