Description
The Siemens Building Technology QFA32SS.FWSN is a high-performance room relative humidity (RH) and temperature sensor engineered for building automation and HVAC control applications. Designed for wall-mount installation, this sensor delivers accurate, real-time environmental data to building management systems (BMS) and direct digital control (DDC) systems.
Selectable Output Signal
One of the standout features of the QFA32SS.FWSN is its user-selectable output signal, giving installers and engineers the flexibility to match the sensor to virtually any control system input:
- 0–10 Vdc output signal
- 4–20 mA output signal
- Output type is field-selectable for maximum installation flexibility
Measurement Capabilities
- Relative Humidity (RH) measurement range: 0–100% RH
- Temperature measurement output available via 4–20 mA or 0–10 V signal
- Simultaneous RH and temperature sensing in a single device
Connectivity & Installation
- Connection type: Terminal block for secure, reliable field wiring
- Integrated display for on-site reading of current RH and temperature values
- Override capability for manual control and commissioning convenience
- Designed for standard room wall-mount installation
Key Features & Benefits
- Dual-parameter sensing — measures both humidity and temperature in one unit
- Selectable 0–10 Vdc or 4–20 mA output for broad system compatibility
- On-board display for local monitoring without additional instrumentation
- Terminal block connection simplifies wiring and reduces installation time
- Override function supports commissioning, testing, and manual adjustments
- Siemens Building Technology quality — trusted in commercial and industrial BAS applications
Ideal Applications
- Commercial office buildings and retail spaces
- Hospitals, laboratories, and cleanrooms requiring precise humidity control
- Schools, universities, and institutional facilities
- Hotels and hospitality environments
- Any HVAC or BAS installation requiring room-level RH and temperature monitoring
The Siemens QFA32SS.FWSN combines precision sensing, flexible output options, and a user-friendly display into a single, compact room sensor — making it an ideal choice for engineers and contractors seeking reliable environmental monitoring in building automation systems.
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