The Siemens QFA4171D sensor. HUMID 2%, TMP CERT RM SEN, DIS, 4 20MA
This Q-Series Outdoor Air Relative Humidity and Relative Humidity & Temperature Sensor with LCD display monitors and transmits changes in humidity and temperature to the building control system. This unit is especially suited for HVAC applications where high accuracy and short response times for measuring relative humidity are required. It has a 2 percent certified accuracy, a 4 to 20 mA humidity output signal, and a 4 to 20 mA temperature output signal.




