Extech 39240 Waterproof Stem Thermometer
The Extech 39240 is a compact, waterproof digital thermometer with a 70 mm (2.75″) stainless‐steel stem and a measuring range from ‑40 °C to +200 °C (‑40 °F to +392 °F). It is designed for quick and reliable temperature checks in solids and liquids, with handy features like MAX/MIN recall and a durable waterproof housing.
Description
The 39240 is built for functionality and portability. The integral stainless‐steel stem (70 mm) makes it suitable for immersing in liquids or probing solid materials, while the digital display and compact body allow for fast reading and handheld use. The range of ‑40 °C to +200 °C covers many common use‑cases from freezer diagnostics to moderate heating processes. The device also supports °C/°F switching, displays readings with 0.1° resolution, and includes Data‐Hold, automatic power‐off, and MAX/MIN memory recall for tracking extrema. The waterproof housing ensures that the thermometer can be used in humid or splash‐prone environments, making it appropriate for food service, refrigeration, HVAC, laboratory or general maintenance tasks. With its pocket‐friendly size (approx. 150 × 20 × 18 mm) and light weight (~20–30 g), it’s convenient to carry in the field or tucked into a toolkit.
Features
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Measures from approximately ‑40 °C to +200 °C (‑40 °F to +392 °F).
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70 mm (2.75″) stainless steel stem for immersion or probing.
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Waterproof housing — suitable for splash and wet areas.
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MAX/MIN memory recall of highest and lowest readings during a session.
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Data‐Hold function to freeze the display reading for note taking.
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Resolution of 0.1° (at finer range).
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Auto power‐off feature to conserve battery.
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Switchable °C/°F units for global use.
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Very compact and lightweight design — easy to carry.
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Supplied with button battery and protective cover.
Includes
- R44 button battery
- Protective cover
