The USB-501-PRO from Measurement Computing Corp., Norton, MA, is a standalone temperature data logger in a corrosion-, impact-, and weather-resistant SS body for use in harsh environments. The logger can store up to 32,510 temperature readings over the –40°C to 125°C range with a typical ±0.2°C accuracy. The logger's body is made from machined 316 SS and is IP67 rated. Power is supplied by a replaceable long-life lithium battery which allows logging for up to 3 yr. Software is included for logger configuration and programming alarm thresholds, logging rates, start times, and measurement units. It also provides 1-click access to download, display, and export the data.