Thermocouple, NTC & RTD Input Thermometers
Digital thermometers are the quickest and most accurate way to determine temperature. We stock a wide variety of different thermometer types including food thermometers, outdoor-use and multi-channel thermocouple instruments.
Find out more about Thermocouple, NTC & RTD Input Thermometers below.

- Accuracy of ±0.3%
- Measure from -50 degrees Celsius to 1300 degrees Celsius
- Store up to 150 temperature readings

- Measure temperature from two points simultaneously
- Huge measurement range
- Includes two type K thermocouples

- -200°C to 1372°C measurement range
- 3 1/2 digit LCD screen
- Supplied with two K-Type bead thermocouples

- Single channel temperature input
- Continuously displays MAX/MIN values
- Compact design
- Testo Smart App connection

- Infrared surface temperature measurements
- Type K surface probe temperature measurements
- 2 point laser and 30:1 lens

- Pistol-shaped design
- Extremely wide temperature range
- Integrated laser pointer


- Measure temperature levels from two points simultaneously
- Compatible with type K temperature probes
- Highly accurate results (0.1%)

- Works with both type T thermocouple and thermistor temperature probes
- High accuracy, reliable temperature measurements
- Designed for use within the food/catering industry

- Digital handheld thermometer
- IP67 waterproof
- Optional Flat Food Probe

- Single Input
- Accurate
- Waterproof

- Single Input
- Integral timer
- Waterproof

- Single Input
- Very high accuracy
- IP67 Waterproof Casing

- Specially designed for use in the food industry
- Compatible with both wired and wireless probes
- Versatile measurement range depending on equipped probe

- Handheld digital thermometer
- -58 to 2000°F and -50 to 1300°C temperature ranges
- Comes with a 9V battery and two K-Type temperature probes
- Single and differential temperature measurements

- Robust, fully waterproof digital thermometer rated to IP66 and IP67
- Suitable for use with a wide variety of interchangeable type K temperature probes
- Temperature measurement range from -99.9 to 1372°C

- For use with food
- Compatible with type T and type K probes
- Wide measurement range

- High precision digital thermometer with two input ports
- Works with a wide variety of type K temperature probes (sold separately)
- Waterproof design rated to IP66 and IP67

- UKAS Calibration Certificates
- Programmable high & low audible alarms
- European Standard EN 13485

- Temperature Range: -50°C to +1300°C / -58°F to +1999°F
- Sub-Miniature Connector
- Contains: KM340 Thermometer, SK21M and AK28M Probes and Case

- Upgraded version of the Therma 22 thermometer with waterproof case
- Universally suitable for use with thermistor/Type T thermocouple probes (sold separately)
- Ideal for measuring temperatures in food processing applications

- 2 point (-18, 0°C) UKAS Calibration Certificates
- Programmable high & low audible alarms
- Records the max/min temperature

- Wall Mount Unit
- Colour Coded Probes
- Chef's Thermometer with Hold Function

- Suitable for use outside and in refrigerated buildings and rooms
- Programmable upper and lower limits with an audible alarm
- Testo Smart App connection

- Includes thermometer, air probe and surface probe plus a carrying case
- High accuracy measurements
- Type K thermometer
About Thermocouple, NTC & RTD Input Thermometers
Many thermometers originally had slightly inaccurate, analogue gauges that used mercury and other substances. These have been gradually phased out thanks to innovations in the field of digital temperature measurement.
Digital thermometers are significantly more accurate than older-style thermometers due to their ability to accurately display temperature in Celsius, Fahrenheit, and Kelvin as a digital reading. This is essential for those who need accurate temperature readings in challenging environments are for installations that rely on accurate set-up data.
Devices for measuring temperature generally come in many different forms, and although they all come under the category of digital thermometers they all are used for different kinds of temperature measurement.
We have a versatile range that features pocket-sized models and many, especially the data-loggers, with PC-interfacing ability. Some models are also capable of working in extreme temperatures, allowing accurate temperature readings in potentially hazardous environments. Supermarkets in particular will find great use in a data-logging thermometer with audible alarms, as these devices will provide a clear indication when freezers are not working at the correct temperature.