Simply insert any of these compact, 4.5 inch (11.4 cm) long loggers into your computer USB port, name it, Select high and low alarms If required, and set the logger start time. Once configured, the logger can be removed from the computer to log independently. Data is downloaded back onto the PC where it can be analyzed and viewed as a graph using included software. For application requiring an extended temperature range, EL-USB-1-PRO model measures from –40 to 257°f (–40 to 125°c), stores over 32,000 readings, and includes a waterproof stainless steel enclosure for more hostile environments. While in SS case, unit may be used in an Autoclave. Direct-to-usb connection and easy-to-use functionality user-programmable alarm thresholds — perfect for compliance monitoring. All data loggers come with software.