
Siemens Building Technology QFA32SS.FWSN Sensor
The Siemens Building Technology QFA32SS.FWSN Sensor is a high-precision room temperature and humidity sensor engineered for demanding commercial HVAC and building automation systems (BAS). Featuring a 2% accuracy rating for relative humidity across a 0-100% RH range, this Siemens QFA32SS.FWSN model utilizes a capacitive sensing element to ensure long-term stability and rapid response to ambient changes. Designed for seamless integration with Siemens Terminal Equipment Controllers (TECs) and BACnet system architectures, the unit provides field-selectable 0-10Vdc or 4-20mA analog outputs for both variables, allowing for maximum flexibility during onsite commissioning and control logic mapping.
Built with a robust polycarbonate housing and a sleek digital display, this wall mount humidity sensor provides real-time HMI feedback for occupants while offering professional-grade overrides and setpoint adjustments. The integrated terminal block connection and RJ-11 port simplify wiring, ensuring secure and error-free termination for technicians. Operating on a standard 24 VAC/VDC power supply, the unit is optimized for indoor air quality monitoring in environments ranging from 32°F to 122°F. Whether you are managing dehumidification cycles or high-precision climate zones, the Siemens building automation sensor delivers the reliable data required for efficient equipment cycling and energy management.
Key Benefits- Field-Selectable Outputs: Easily switch between 4-20mA and 0-10V signals to match diverse controller requirements.
- High-Accuracy Sensing: Precise ±2% RH and ±0.4°F accuracy levels for professional environmental control.
- Enhanced Occupant Interface: Features a clear LCD display for monitoring and a physical override button for temporary setpoint bypass.
- Simplified Installation: Standard terminal block and RJ-11 connections facilitate rapid field replacement and commissioning.
- Broad Compatibility: Fully compatible with Siemens APOGEE and other standard building automation protocols.
Can the output signal be changed after installation?
Yes. The 4-20mA or 0-10Vdc signals for humidity and temperature are field-selectable via internal DIP switches or jumpers, allowing for reconfiguration if the controller is upgraded.
Does this unit support local setpoint adjustment?
Indeed, the full HMI interface allows for digital setpoint adjustments and provides an override button to trigger unoccupied-to-occupied status changes within the BAS.
What mounting hardware is required?
The unit is designed to mount on a 2" x 4" electrical box or directly to drywall using the included anchors and screws. Ensure it is mounted vertically at approximately 5 feet above the floor for optimal airflow.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $251.14
-65%$251.14
$87.90Siemens Building Technology QFA32SS.FWSN Sensor
The Siemens Building Technology QFA32SS.FWSN Sensor is a high-precision room temperature and humidity sensor engineered for demanding commercial HVAC and building automation systems (BAS). Featuring a 2% accuracy rating for relative humidity across a 0-100% RH range, this Siemens QFA32SS.FWSN model utilizes a capacitive sensing element to ensure long-term stability and rapid response to ambient changes. Designed for seamless integration with Siemens Terminal Equipment Controllers (TECs) and BACnet system architectures, the unit provides field-selectable 0-10Vdc or 4-20mA analog outputs for both variables, allowing for maximum flexibility during onsite commissioning and control logic mapping.
Built with a robust polycarbonate housing and a sleek digital display, this wall mount humidity sensor provides real-time HMI feedback for occupants while offering professional-grade overrides and setpoint adjustments. The integrated terminal block connection and RJ-11 port simplify wiring, ensuring secure and error-free termination for technicians. Operating on a standard 24 VAC/VDC power supply, the unit is optimized for indoor air quality monitoring in environments ranging from 32°F to 122°F. Whether you are managing dehumidification cycles or high-precision climate zones, the Siemens building automation sensor delivers the reliable data required for efficient equipment cycling and energy management.
Key Benefits- Field-Selectable Outputs: Easily switch between 4-20mA and 0-10V signals to match diverse controller requirements.
- High-Accuracy Sensing: Precise ±2% RH and ±0.4°F accuracy levels for professional environmental control.
- Enhanced Occupant Interface: Features a clear LCD display for monitoring and a physical override button for temporary setpoint bypass.
- Simplified Installation: Standard terminal block and RJ-11 connections facilitate rapid field replacement and commissioning.
- Broad Compatibility: Fully compatible with Siemens APOGEE and other standard building automation protocols.
Can the output signal be changed after installation?
Yes. The 4-20mA or 0-10Vdc signals for humidity and temperature are field-selectable via internal DIP switches or jumpers, allowing for reconfiguration if the controller is upgraded.
Does this unit support local setpoint adjustment?
Indeed, the full HMI interface allows for digital setpoint adjustments and provides an override button to trigger unoccupied-to-occupied status changes within the BAS.
What mounting hardware is required?
The unit is designed to mount on a 2" x 4" electrical box or directly to drywall using the included anchors and screws. Ensure it is mounted vertically at approximately 5 feet above the floor for optimal airflow.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
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Description
The Siemens Building Technology QFA32SS.FWSN Sensor is a high-precision room temperature and humidity sensor engineered for demanding commercial HVAC and building automation systems (BAS). Featuring a 2% accuracy rating for relative humidity across a 0-100% RH range, this Siemens QFA32SS.FWSN model utilizes a capacitive sensing element to ensure long-term stability and rapid response to ambient changes. Designed for seamless integration with Siemens Terminal Equipment Controllers (TECs) and BACnet system architectures, the unit provides field-selectable 0-10Vdc or 4-20mA analog outputs for both variables, allowing for maximum flexibility during onsite commissioning and control logic mapping.
Built with a robust polycarbonate housing and a sleek digital display, this wall mount humidity sensor provides real-time HMI feedback for occupants while offering professional-grade overrides and setpoint adjustments. The integrated terminal block connection and RJ-11 port simplify wiring, ensuring secure and error-free termination for technicians. Operating on a standard 24 VAC/VDC power supply, the unit is optimized for indoor air quality monitoring in environments ranging from 32°F to 122°F. Whether you are managing dehumidification cycles or high-precision climate zones, the Siemens building automation sensor delivers the reliable data required for efficient equipment cycling and energy management.
Key Benefits- Field-Selectable Outputs: Easily switch between 4-20mA and 0-10V signals to match diverse controller requirements.
- High-Accuracy Sensing: Precise ±2% RH and ±0.4°F accuracy levels for professional environmental control.
- Enhanced Occupant Interface: Features a clear LCD display for monitoring and a physical override button for temporary setpoint bypass.
- Simplified Installation: Standard terminal block and RJ-11 connections facilitate rapid field replacement and commissioning.
- Broad Compatibility: Fully compatible with Siemens APOGEE and other standard building automation protocols.
Can the output signal be changed after installation?
Yes. The 4-20mA or 0-10Vdc signals for humidity and temperature are field-selectable via internal DIP switches or jumpers, allowing for reconfiguration if the controller is upgraded.
Does this unit support local setpoint adjustment?
Indeed, the full HMI interface allows for digital setpoint adjustments and provides an override button to trigger unoccupied-to-occupied status changes within the BAS.
What mounting hardware is required?
The unit is designed to mount on a 2" x 4" electrical box or directly to drywall using the included anchors and screws. Ensure it is mounted vertically at approximately 5 feet above the floor for optimal airflow.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.












