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Multifunction HVAC and IAQ Meter.Easily measure flow speed, volume flow, air humidity and air temperature in one sequence, perfect for HVAC and IAQ applications.
The professional data logger testo 177-T4 with up to 4 external temperature probe connections is used for simultaneous data recording at different locations. With the testo 177-T4, refrigerated and deep-freeze rooms can be monitored non-stop and the