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3G Electric
Siemens QAA2235.EWSN Room Temperature Sensor - Room Temperature Sensors
SiemensRoom Temperature Sensors

Siemens QAA2235.EWSN Room Temperature Sensor

<p>The Siemens QAA2235.EWSN is a wall-mounted room temperature sensor designed for building automation systems. It features a plastic conduit box housing, hardwired electrical connection, and MP-Bus protocol…

SKU 3G-OTH-69364

Also listed as: QAA2235EWSN · QAA2235 EWSN · QAA2235-EWSN

Brand
Siemens
Item
QAA2235.EWSN Room Temperature Sensor
Part Number
QAA2235.EWSN
Category
Room Temperature Sensors
Available to Order
Also known as:QAA2235.EWSNSiemens
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

Siemens
Manufacturer Part Number
QAA2235.EWSN
Type
Conduit Box, 32°F to 122°F, Plastic, Single Measurement, Plastic
Display
No Display
Housing
Plastic
Includes
Matching Gaskets
Housing Type
Conduit Box
Product Type
Room Temperature Sensor
Mounting Location
Wall Mount
Temperature Accuracy
±0.36°F
Electrical Connection Type
Hardwired
Compatible Building Automation Protocols
MP-Bus
For Use With Building Automation Systems
Building Automation System Compatible

Technical Documents

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Siemens Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

<p>The Siemens QAA2235.EWSN is a wall-mounted room temperature sensor designed for building automation systems. It features a plastic conduit box housing, hardwired electrical connection, and MP-Bus protocol compatibility, making it suitable for integration into Siemens or other MP-Bus enabled systems. With a temperature accuracy of ±0.36°F, it provides reliable measurement for HVAC control.</p><p>This sensor is ideal for commercial buildings, offices, and facilities requiring precise temperature monitoring. As a Singapore-based supplier, 3G Electric offers SGD quotes on request, handles GST for local buyers, and provides fast delivery across Singapore and Southeast Asia.</p>

Frequently Asked Questions

What is the temperature accuracy of the QAA2235.EWSN?

The temperature accuracy is ±0.36°F, ensuring precise room temperature measurement.

Does this sensor support MP-Bus protocol?

Yes, it is compatible with MP-Bus building automation protocols, allowing integration with MP-Bus systems.

Used in

Common applications for Siemens
District cooling plants — LME73 + RWF55 for condenser-water modulation
Inflight catering and food-processing steam boilers — LMG22 with SQN90 air-fuel cross-damper
Hospital steam-plant redundancy — LME41 with QRA2 UV flame detection for dual-fuel boilers
Semiconductor fab process heat — LME23 and SKP55 gas valves on hot-oil heater skids
Container-terminal reefer-deck heating — LMG22 retrofit onto legacy burner racks
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Siemens Products

3G Electric supplies Siemens room temperature sensors. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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