
Siemens Building Technology QAA2230.EWSN Sensor
The Siemens Building Technology QAA2230.EWSN is a professional-grade room temperature sensor engineered for precise environmental monitoring in commercial and industrial HVAC applications. This 10k Ohm Type 2 thermistor offers high-accuracy sensing within a range of 32°F to 122°F (0°C to 50°C), making it a staple for Building Automation Systems (BAS) requiring reliable NTC resistance signals. Designed as a "blank front" unit, the EWSN model features no display, which is critical for high-traffic or public areas to prevent unauthorized tampering or setpoint adjustments. Contractors will appreciate the simplified terminal block connection, which ensures a secure hardwired interface for rapid deployment. The patented housing includes strategically placed ventilation slots to optimize airflow across the sensing element, maintaining a fast thermal response time while the white, low-profile design integrates seamlessly into modern architectural interiors. This sensor is fully compatible with Siemens Terminal Equipment Controllers (TEC) and any standard controller accepting a 10K NTC Type II input.
Key Benefits- Tamper-Proof Design: The blank front "E" version eliminates unauthorized user interaction, ensuring facility setpoints remain consistent.
- High-Precision Sensing: Utilizes a 10k Ohm Type 2 thermistor with a measurement accuracy of +/- 0.4°F at 77°F for tight climate control.
- Optimized Airflow: Patented housing ventilation allows for rapid detection of room temperature fluctuations, reducing control loop lag.
- Professional Installation: Terminal block wiring provides a robust electrical connection compared to inferior clip-on alternatives.
- Universal Compatibility: Standard resistance output works with Siemens controllers and third-party automation platforms.
Is this sensor compatible with non-Siemens controllers?
Yes, as long as your controller is configured to read a standard 10k Ohm Type 2 NTC thermistor signal, this unit will provide accurate data.
Can this be mounted on a standard electrical box?
The QAA2230.EWSN is designed for easy installation on a standard 2” x 4” electrical box or can be mounted directly to a wall using the included hardware.
Does this unit provide humidity data?
No, this specific model is a dedicated temperature-only sensor. For combined humidity and temperature, you would typically look at the QFA series counterparts.
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.
Siemens Building Technology QAA2230.EWSN Sensor
The Siemens Building Technology QAA2230.EWSN is a professional-grade room temperature sensor engineered for precise environmental monitoring in commercial and industrial HVAC applications. This 10k Ohm Type 2 thermistor offers high-accuracy sensing within a range of 32°F to 122°F (0°C to 50°C), making it a staple for Building Automation Systems (BAS) requiring reliable NTC resistance signals. Designed as a "blank front" unit, the EWSN model features no display, which is critical for high-traffic or public areas to prevent unauthorized tampering or setpoint adjustments. Contractors will appreciate the simplified terminal block connection, which ensures a secure hardwired interface for rapid deployment. The patented housing includes strategically placed ventilation slots to optimize airflow across the sensing element, maintaining a fast thermal response time while the white, low-profile design integrates seamlessly into modern architectural interiors. This sensor is fully compatible with Siemens Terminal Equipment Controllers (TEC) and any standard controller accepting a 10K NTC Type II input.
Key Benefits- Tamper-Proof Design: The blank front "E" version eliminates unauthorized user interaction, ensuring facility setpoints remain consistent.
- High-Precision Sensing: Utilizes a 10k Ohm Type 2 thermistor with a measurement accuracy of +/- 0.4°F at 77°F for tight climate control.
- Optimized Airflow: Patented housing ventilation allows for rapid detection of room temperature fluctuations, reducing control loop lag.
- Professional Installation: Terminal block wiring provides a robust electrical connection compared to inferior clip-on alternatives.
- Universal Compatibility: Standard resistance output works with Siemens controllers and third-party automation platforms.
Is this sensor compatible with non-Siemens controllers?
Yes, as long as your controller is configured to read a standard 10k Ohm Type 2 NTC thermistor signal, this unit will provide accurate data.
Can this be mounted on a standard electrical box?
The QAA2230.EWSN is designed for easy installation on a standard 2” x 4” electrical box or can be mounted directly to a wall using the included hardware.
Does this unit provide humidity data?
No, this specific model is a dedicated temperature-only sensor. For combined humidity and temperature, you would typically look at the QFA series counterparts.
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.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Siemens Building Technology QAA2230.EWSN is a professional-grade room temperature sensor engineered for precise environmental monitoring in commercial and industrial HVAC applications. This 10k Ohm Type 2 thermistor offers high-accuracy sensing within a range of 32°F to 122°F (0°C to 50°C), making it a staple for Building Automation Systems (BAS) requiring reliable NTC resistance signals. Designed as a "blank front" unit, the EWSN model features no display, which is critical for high-traffic or public areas to prevent unauthorized tampering or setpoint adjustments. Contractors will appreciate the simplified terminal block connection, which ensures a secure hardwired interface for rapid deployment. The patented housing includes strategically placed ventilation slots to optimize airflow across the sensing element, maintaining a fast thermal response time while the white, low-profile design integrates seamlessly into modern architectural interiors. This sensor is fully compatible with Siemens Terminal Equipment Controllers (TEC) and any standard controller accepting a 10K NTC Type II input.
Key Benefits- Tamper-Proof Design: The blank front "E" version eliminates unauthorized user interaction, ensuring facility setpoints remain consistent.
- High-Precision Sensing: Utilizes a 10k Ohm Type 2 thermistor with a measurement accuracy of +/- 0.4°F at 77°F for tight climate control.
- Optimized Airflow: Patented housing ventilation allows for rapid detection of room temperature fluctuations, reducing control loop lag.
- Professional Installation: Terminal block wiring provides a robust electrical connection compared to inferior clip-on alternatives.
- Universal Compatibility: Standard resistance output works with Siemens controllers and third-party automation platforms.
Is this sensor compatible with non-Siemens controllers?
Yes, as long as your controller is configured to read a standard 10k Ohm Type 2 NTC thermistor signal, this unit will provide accurate data.
Can this be mounted on a standard electrical box?
The QAA2230.EWSN is designed for easy installation on a standard 2” x 4” electrical box or can be mounted directly to a wall using the included hardware.
Does this unit provide humidity data?
No, this specific model is a dedicated temperature-only sensor. For combined humidity and temperature, you would typically look at the QFA series counterparts.
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.












