Thermistor thermometer with Bluetooth® wireless technology

Accurate and Smart

The Therma 20 Blue thermometer combines the features and accuracy of one of our most popular catering thermometers, the Therma 20, with Bluetooth BLE 5.0 technology. Take measurements with ease and confidence whilst enjoying the added benefit of readings sent straight to your device. 

3,000-Hour Battery Life

Powers off automatically after a few minutes to extend its long battery life. 

Built to Last

Designed and made in Britain and supplied with a two-year guarantee. 

Readings You Can Trust

 ±0.5 °C high system accuracy which is guaranteed for life. FREE traceable calibration certificate included so you can be confident in the accuracy of your readings.

Rapid Calibration Checks

The Therma 20 Blue is compatible with Thermistor Test Caps that allow users to instantly verify the accuracy of their instrument at any time.