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Your specialist for temperature measurement technology
Application-specific temperature probes
As a global specialist and OEM supplier of temperature probes and thermocouples, we design the ideal probe for your specific measuring task by working closely with our customers.
Here, you get everything from one source:
the application-specific design, the samples and prototypes, right through to the production-ready article, the comprehensive qualification and the stable, high reproducible series production.
Testo Sensor GmbH is exhibiting at ISH 2025
Innovative solutions and expertise: Visit us at ISH 2025 in Frankfurt
From March 17 to 21, 2025, the ISH in Frankfurt – the world’s largest trade fair for water, heating and air conditioning – will once again open its doors. We will be taking part again this year and you can find us in Hall 11.2, Stand E 20, with our partner H&S Sensortechnik from Austria. Together, we will be presenting pioneering temperature sensors and sensor technology that are specially designed to meet the requirements of heating, air conditioning and refrigeration technology.
Why visit us?
Our products stand for precision, reliability and innovation, all of which are indispensable in an industry that is increasingly focusing on energy efficiency and sustainability. Our experts will be on hand to show you our latest developments, understand your individual challenges and requirements, and discuss solutions with you. Find out how our customized solutions can make your processes more efficient, whether it’s through innovative materials, precise measurement technology or durable components. We look forward to welcoming you at ISH 2025 in Frankfurt and exploring the possibilities of working together with you!Testo Sensor GmbH
Testo Sensor GmbH was founded in 2010 as a subsidiary of Testo SE & Co. KGaA. As measuring technology experts, we have specialized in the development and manufacture of customer-specific temperature probes. As a skilled partner and OEM supplier to our customers, we deliver the complete package: the technical solution, the necessary quality, the appropriate supply logistics and the right price.
Focusing on OEM customers in these areas
- Heating systems
- Professional coffee machines
- Mechanical engineering
Production facility in Shenzhen/China
Sample and prototype construction as well as small series production in Lenzkirch
Special probe construction for Testo instruments in Lenzkirch

Part of a strong group of companies
Testo SE & Co. KGaA
Portable and stationary measuring technology and hand-held measuring instruments

Testo Sensor GmbH
Customer-specific temperature probes for specific OEM applications

Testo Industrial Services
Calibration and validation services

Testo SE & Co. KGaA - global supplier of measuring technology
- One of the leading manufacturers of measuring instruments in the fields of energy management, heating/air conditioning/ventilation, food and pharmaceutical industry
-
3,700 employees in more than 37 subsidiaries distributed over 25 countries worldwide,
> 80 sales & service partners on all continents -
Average annual growth of over 10% since the company was founded in 1957 and
a current turnover of more than 426 million euros


Get in contact with us.
- Testo Sensor GmbH
- Testo-Str. 1 | 79853 Lenzkirch
- +49 7653 96597 0
- +49 7653 96597 99
- info@testo-sensor.de
- Neu: Testo Sensor Webshop
- Meet us on ISH 2025
Your contact persons in sales and order processing

- Heating technology, white goods, coffee machines
- Nico Frey
- +49 7653 96597 74
- nfrey@testo-sensor.de

- Air-conditioning and refrigeration technology
- Jannik Wolf
- +49 7653 96597 75
- jwolf@testo-sensor.de

- Temperature probes for heat and cold meters
- Patrick Hermann
- +49 7653 96597 73
- phermann@testo-sensor.de

- Temperaturfühler für HORECA Applikationen
- Tobias Preiser
- +49 7653 96597 76
- tpreiser@testo-sensor.de

- Regionalvertrieb Südeuropa
- Luca Malossi
- +49 7653 96597 77
- lmalossi@testo-sensor.de

- Transmitters, standard portfolio
- Julian Mäntele
- +49 7653 96597 71
- jmaentele@testo-sensor.de

- Plastics industry and mechanical engineering
- Tobias Löffler
- +49 7653 96597 49
- toloeffler@testo-sensor.de