• Part number 0563 0535 01
• Simple, fast and precise measurement of CO₂ concentration
• Audible alarm sounds if a limit value is exceeded
• Measuring range: 0 to 10,000 ppm
• Fast in-app configuration, graph history, second screen and measurement data memory in the testo Smart App

For indoor air quality and comfort, the measurement of the carbon dioxide content in the room air is crucial. To obtain precise results quickly, you need a suitable measuring instrument.

The testo 535 compact CO2 measuring instrument allows you to carry out this important measurement easily and efficiently - and thus ensure comfort and a healthy indoor climate. Thanks to the long-term stable infrared sensor technology, the measured values are repeatable and comparable even over longer periods of time. Ideal for recurring comparative measurements. Here, you are also supported by the time and point averaging directly in the measuring instrument.

By the way, the testo Smart App displays the measured values as a table or graph, stores the results and documents them. This not only makes it easy to configure the measuring instrument individually - the App also turns your smartphone into a second display!

• Simple and fast: Measurement menus for numerous applications provide optimum support in configuring and carrying out the measurement
• Clear graphical presentation of readings, e.g. as a table, for quick interpretation of results
• Create digital measurement reports including photos as PDF/CSV files on site and send via e-mail