The Testo compact CO₂ measuring instrument testo 535 with practical App connection 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 reproducible and comparable even over longer periods of time. Ideal for recurring comparative measurements.
Precise measurement of CO₂ concentration Timed and point mean value calculation Operating temperature is 0 to +50 °C Battery life is 30 hours Audible alarm sounds
