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Siemens
Siemens QFM3171D : Duct Humidity/Temperature Combo Sensor, 2% rH Accuracy, 4-20mA Output, LCD Display, 5-Year Warranty
MSRP: $797.34$302.99
Duct Humidity
Duct Humidity Sensors measure the relative humidity or rH of the air within the duct system. These items come with an options such as adding temperature or IAQ elements as well. Moitoring duct humidity levels prevents the growth of mold or mildew as well as keeps the comfort of the building occupants in priority.