Product Use of Testo 405i – Hot-wire Anemometer The functional testing of ventilation and air conditioning systems includes monitoring the flow speed in ventilation ducts. Users can read the measurements using the testo Smart Probes App installed on their smart device. The app lets users configure duct dimensions to calculate volume flow measurements. Use the testo 405i along with the testo 605i thermo-hygrometer to determine cooling and heating performance. The testo 405i works on smart devices with either Android or …
