HiTemp 150 measures and records temperatures between -40 and 302°F (-40 and 150°C). The submersible datalogger is suitable for autoclaves validation and is built to withstand harsh environments. The instrument has a 2” rigid external probe and a real-time clock to provide time- and date-stamped data. The device can be started and stopped directly from a computer, and its small size allows it to fit in tight spaces. The storage medium is nonvolatile solid-state memory, providing maximum data security even if the battery becomes discharged.