Testo, is a world leader in the design, development, and manufacture of portable test and measurement instrumentation. Backed by 60 years of measuring engineering experience, our mission is to provide the best quality, service, and value in the industry. In addition, Testo is recognized as the leading worldwide manufacturer of portable combustion efficiency analyzers and air emission analyzers. Testo has become a major supplier of HVAC, critical HVAC, refrigeration, airflow, and environmental monitoring instruments for markets as diverse as chemical, food service and production, pharmaceutical and biotechnology, and residential HVAC suppliers.
The company was founded in 1957 in Lenzkirch, in the Black Forest region of Germany. Testo has been privately owned since its inception. Today, Testo consists of 33 subsidiaries and over 60 agents around the world.
Testo's first product manufactured was a simple electronic thermometer. Today, the product line has expanded to include a large variety of temperature measuring instruments, such as data loggers, air velocity meters, humidity and dew point meters, refrigeration service analyzers, multifunction instruments, stack gas analyzers and air emission monitors, water analyzers, tachometers, sound, pressure, and light meters, and thermal imagers.

World market leader in measurement technology.

Featured Products

Smart Probes

  • Your smartphone is the remote control and the measurement data centre
  • Analyse, store and send measurement data


  • Newest technology for more efficient work
  • Uniquely user-friendly
  • Suitable for all important measurement tasks

Thermal Imager

  • High-value detector
  • Easy operation - switch on and go
  • Pays off after only a few applications

Resources Centre


Testo Smart Probes


Your search returned 318 products in 39 categories

Go to products

Data Acquisition & Logging (32)

Multimeters & Accessories (5)

Pressure Test & Measurement (5)

Speed Test & Measurement (3)

Pneumatic & Hydraulic Pressure Gauges (3)

Industrial Switches (2)

Tapes (1)

Bench Power Supplies & Sources (1)


All Products