QAA22SS.EWNN Siemens Temperature Sensor
$103.03
Room Temperature Sensor, 0-10Vdc Output Signal, or 4-20mA Output Signal, (selectable) Output Signal, 32 Degree – 122 Degree Fahrenheit (0 Degree – 50 Degree Celsius) Temperature, Connection Type: Terminal Block, No Display,
Siemens QAA22SS.EWNN Room Temperature Sensor – Selectable Analog Output, White Blank Front
Overview
The Siemens QAA22SS.EWNN is a wall-mounted, sensing-only room temperature sensor from the QAA2200 series. It provides selectable analog outputs (0-10 V, 4-20 mA, etc.), blank front (no display or setpoint adjustment) for tamper-proof mounting, and is designed with a modern profile and ventilation slots for accurate thermal response. Ideal for building automation systems, classrooms, offices, or any space requiring reliable, stable temperature feedback without local user interface.
Specifications
| Specification | Details |
|---|---|
| Brand / Model | Siemens QAA22SS.EWNN |
| Series | QAA2200 Series |
| Sensor Type | Room temperature sensor, sensing-only |
| Output Signal Options | Selectable analog: 0-10 V / 0-5 V / 4-20 mA |
| Power Supply / Voltage | 18-36 V DC or 24 VAC ±20% |
| Temperature Range (Operating) | 32 to 122 °F (0 to 50 °C) |
| Accuracy | ± 0.9 °F (± 0.5 °C) typical for analog outputs |
| Enclosure / Housing | Wall-mount, white plastic housing, blank front (no HMI or display) |
| Dimensions | ~ 4.5 in × 2.75 in × 1.18 in (≈ 115 mm × 70 mm × 30 mm) |
| Mounting | Mounts on standard 2” × 4” electrical box or directly on drywall |
| Connection Type | Terminal block / wiring via RJ-11 (or per Siemens spec) |
| Ventilation | Strategically placed vents to allow airflow for faster and accurate response |
| Certifications & Standards | UL 916, CE, and related building automation sensor standards |
Features & Benefits
-
Blank front prevents unauthorized adjustments; good for public or supervised spaces
-
Selectable analog output allows compatibility with various control systems
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Accurate temperature sensing helps maintain comfort and energy efficiency
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White, neutral design with ventilated housing blends into interior environments
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Reliable and durable, long service life with minimal maintenance
Applications
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Building automation and HVAC temperature feedback loops
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Offices, classrooms, corridors, or other indoor spaces where users should not adjust settings
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Interfaces to controllers, RTUs, or BAS systems that accept analog temperature signals
Installation & Maintenance Notes
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Mount in a location away from direct sunlight, drafts, or heat sources to avoid false readings
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Use proper wire gauge and keep wiring short when possible to minimize signal distortion/noise
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Secure wiring connections and ensure sealing of wall penetrations to prevent air leakage
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Clean vents occasionally if dust accumulates; check sensor element if occupants report inaccuracy
Warranty & Quality Assurance
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Manufactured by Siemens under their strict quality standards
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Meets safety, thermal, and electrical specifications typical of QAA2200 series sensors
Related Products
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Other QAA22SS / QAA22SS series sensors with HMI / display (e.g. “EWSN”, “FWSN” versions)
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Sensors with different output types (resistive RTDs, thermistors) for applications not using analog outputs
-
Accessories like backplates, insulating gaskets, cover plates
| Weight | 1 lbs |
|---|---|
| Dimensions | 6 × 5 × 4 in |
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