The Testo 445 (0560 4450) Multi-Function Climate Measuring Instrument allows users to keep a close on indoor air quality. This versatile tool can measure up to 6 parameters (with the appropriate probe), which can help users make a professional assessment of indoor air quality. This climate measuring instrument supports users in adjusting and checking ventilation and air conditioning systems.

The 445 (0560 4450) Multi-Function Climate Measuring Instrument has two probe inputs for the connection of a broad range of probes for measurements on ventilation/air conditioning systems. The instrument records flow velocity values in a duct, at a duct outlet or on extraction systems. In addition to this, the 450 measures or calculates the parameters volume flow, Indoor Air Quality, temperature, relative humidity, dewpoint, absolute humidity, degree of humidity, enthalpy, pressure and CO. At the simple press of a button, the 445 displays the last measurement value measured as well as minimum, maximum and mean values. In addition to this, measurement data can be stored according to measurement site and analyzed on a PC, or documented on site with the Testo fast printer.