Siemens QFM3100 DUCT RELATIVE HUMIDITY TEMPERATURE SENSOR, 2 PERCENT ACCURACY, 0-10 VDCSiemens QFM3100 Duct Relative Humidity Temperature Sensor, 2 percent accuracy, 0 10 Vdc This Q Series Duct Relative Humidity Sensor monitors and transmits changes in humidity to the building control system. This unit is especially suited for applications where precise, stable humidity sensing is required. It has a 2% accuracy rating and a 0 to 10 Vdc humidity output signal. Additional Information Immersion length90206 mm Measurement range humidity0100