•You have the option of connecting thermal anemometers and vane anemometers for measuring air velocity and volumetric flow in ventilation ducts •Air quality: measurement of CO2, air humidity, air temperature and absolute pressure with the optional IAQ probe •Display of dew point distance, min., max. and mean values •Illuminated display testo 435 is a series of multi-function climate measuring instruments made by Testo. The testo 435-1 version is the entry-level measuring instrument in this series. You can use this to carry out measurements which you need to adjust ventilation and air conditioning systems and assess air quality. For this we offer you a comprehensive range of optional probes and sensors to choose from. Product Description The testo 435 multi-function climate measuring instrument is available in four versions. This testo 435-1 version is the entry-level measuring instrument for adjusting and testing ventilation and air conditioning systems and for assessing air quality. You have a choice of different optional probes available for measurement, all of which can be connected to the testo 435-1. Attachable probes (optional) for assessing air quality •IAQ probe (Indoor Air Quality) for assessing air quality – measures CO2, air temperature, air humidity and absolute pressure •Ambient CO probe for CO measurement in buildings and rooms •Globe thermometer for measuring radiant heat •Temperature probe for measuring air temperature, core temperature and surface temperature Attachable probes (optional) for adjusting and testing ventilation and air conditioning systems