The EL-USB-1-PRO is a high temperature USB data logger capable of measuring and recording over 32,000 temperature readings from -40°F to +257°F/-40°C to +125°C. Housed in a waterproof, stainless steel enclosure that protects the logger from corrosion, impact and moisture, the unit is rated to IP67 / NEMA 4X standards and can be used in extremely hostile environments. The EL-USB-1-PRO data logger is supplied with a long life, replaceable lithium battery that allows logging for up to three years. The logger is plugged directly into a USB port and the EasyLog software is used to choose a logger name, set a sample rate, program high and low alarms, and select immediate or delayed logging start. The unit can then be placed in the chosen logging location. When logging is complete, the user plugs the EL-USB-1-PRO back in the computer’s USB port and downloads the data, which can be graphed, printed, or exported to other spreadsheet applications. The EL-USB-1-PRO is available at a cost of $150.