Siemens® QFA 2071 Room Sensor


Siemens® QFA 2071 Room Sensor acquires the relative humidity in the room whose electrical capacitance changes as a function of the relative humidity via its capacitive humidity sensing element.

Also, this sensor acquires the temperature in the room via its sensing element whose electrical resistance changes as a function of the temperature.

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Product Description

Siemens® QFA 2071 Room Sensor used for relative humidity and temperature.


In ventilating and air conditioning plants to acquire.

  • Relative Humidity.
  • Temperature.

The QFA2071 is used as a

  • Control sensor.
  • Measuring sensor for indicating units or building automation and control systems.

Additional Information

Weight 1 kg
Model No
Measuring Parameters Humidity, Temperature
Operating Voltage
Measurement Accuracy At 0...95 % r.h. and 23 ºC: ±5 %, At 30...70 % r.h. and 23 ºC: ±3 %
Time constant
Connection, electrical
Type of fixing
Degree of Protection IP30
Accuracy 0.3℃

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