- testo 535 – Co2 measuring instrument with App connection and audible alarm
- Transport bag
- Calibration protocol
- 3 x AA batteries
The compact CO2 measuring instrument testo 535 is ideally suited for simple, fast and precise determination of carbon dioxide content to ensure indoor air quality and thus health and performance. The connection to the testo Smart App enables configuration, display (also as second screen) and storage as well as documentation of the measured values directly in the App.