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Thermapen ONE features The Thermapen instant-read thermometer’s large display shows precise temperature measurements with a 0.1 °C resolution. It features a wide temperature range of -49.9 to 299.9 °C. Both low battery (icon) and open circuit indications are displayed when applicable. Each Thermapen is powered by a single AAA battery and has a life expectancy of 2000 hours. The Thermapen One is fully configurable using buttons in the battery compartment. Here you can lock the display position, disable auto-sleep mode, switch between °C and °F readings, or choose between a 1° and 0.1° resolution. Thermapen® is a registered trademark in the UK (2025607), EU (008449571) and the USA (3898535). It is also protected by German Utility Patent DE202013103605 (U1), EC Regd.Des.No. 002535161-0003 and EC Regd.Des.No. 002535161-0005. The automatic 360° rotational display is protected by UK Patent No. GB 2504936 and USA Patent No. US 9470560