Therma 20 Thermistor Food Thermometer

The ETI Therma 20 Thermistor Food Thermometer is purpose-built for professional catering, food safety, and HACCP environments. Designed and manufactured in the UK, it meets the stringent requirements of European Standard EN 13485, enabling reliable temperature monitoring across the food supply chain—from transport through storage to plate.

Boasting high system accuracy of ±0.4 °C (−10 °C to +70 °C)—guaranteed for the life of the instrument thanks to its robust thermistor electronics—it provides precise temperature logging for critical inspections.

With a measurement range from −39.9 °C to 149.9 °C and 0.1 °C resolution, it covers everything from chilled checks to hot food validation. The ergonomic ABS case is treated with Biomaster antimicrobial protection to help reduce bacterial growth in busy kitchen environments.

Powered by 3 × AAA batteries, the Therma 20 delivers a minimum of 5 years (20,000 hours) of typical use. An automatic shut-off after 10 minutes (configurable) helps preserve battery life.

Although it ships without probe, the Therma 20 features a locking Lumberg screw connector, allowing you to select from compatible interchangeable thermistor probes—including penetration, air/gas, between-pack, and fast-response options available in colour-coded styles for cross-contamination control. Includes a free traceable calibration certificate, with optional UKAS 3- or 5-point calibration available.

Reliable, hygienic, and versatile—Therma 20 is ready for demanding food safety workflows, routine checks, and HACCP compliance.

Key Features:

• High Long-Term Accuracy: Guaranteed system accuracy of ±0.4 °C within −10 °C to +70 °C.

• Wide Temperature Range: −39.9 °C to 149.9 °C with 0.1 °C resolution.

• Interchangeable Probe Capability: Use a range of thermistor probes (sold separately) for different tasks.

• Durable Hygienic Design: ABS housing with Biomaster antimicrobial protection reduces microbial growth.

• Long Battery Life: Operates up to 5 years on 3 × AAA batteries; auto-off feature extends battery life.

• Compliance Ready: Includes free traceable calibration certificate; optional UKAS calibration available.

• EN 13485 Certified: Meets European standard for chilled and frozen food temperature monitoring.