For assessing indoor air quality: use the probe (with the compatible measuring instrument) to measure CO₂ concentration, humidity and air temperature.
Scope of Delivery: CO2 probe including temperature and humidity sensor (consisting of CO2 probe head and cable handle (cable length 1.4 m), 4 x AA batteries, table stand and calibration protocol. Please do not use the probe in condensing atmospheres. For continuous application in high-humidity ranges. >80% RH at ≤30°C for >12 h, >60% RH at >30 °C for >12 h. Please contact Testo Service or contact us via the Testo website.