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Siemens Temperature and Humidity Sensor: Wall Mount, -40°F to 158°F, 0 to 10V DC/4 to 20 mA - Room Temperature & Humidity Sensors
SiemensRoom Temperature & Humidity Sensors

Siemens Temperature and Humidity Sensor: Wall Mount, -40°F to 158°F, 0 to 10V DC/4 to 20 mA

The SIEMENS QFA32SS.EWSN is a wall-mounted room temperature and humidity sensor with no display, housed in plastic and including matching gaskets. It provides a 0 to 10V DC humidity output and a 0 to 10V DC…

SKU 3G-OTH-70641

Also listed as: QFA32SSEWSN · QFA32SS EWSN · QFA32SS-EWSN

Brand
Siemens
Item
Temperature and Humidity Sensor: Wall Mount, -40°F to 158°F, 0 to 10V DC/4 to 20 mA
Category
Room Temperature & Humidity Sensors
Available to Order
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Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Specifications

Siemens
Manufacturer Part Number
QFA32SS.EWSN
Type
-40°F to 158°F, 0 to 10V DC/4 to 20 mA, Polycarbonate
Display
No Display
Housing
Plastic
Includes
Matching Gaskets
Product Type
Room Temperature and Humidity Sensor
Humidity Output
0 to 10V DC
Mounting Location
Wall Mount
Temperature Accuracy
±0.90°F
Relative Humidity Range
0 to 100%
Temperature Signal Output
0 to 10V DC
Electrical Connection Type
Screw Terminals
Relative Humidity Accuracy
±2% of Full Scale
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

The SIEMENS QFA32SS.EWSN is a wall-mounted room temperature and humidity sensor with no display, housed in plastic and including matching gaskets. It provides a 0 to 10V DC humidity output and a 0 to 10V DC temperature signal output, with a temperature accuracy of ±0.90°F and a relative humidity accuracy of ±2% of full scale over a 0 to 100% range. The sensor uses screw terminals for electrical connection and is compatible with MP-Bus building automation protocols for use with building automation systems.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is the Siemens QFA32SS.EWSN temperature and humidity sensor used for?

The Siemens QFA32SS.EWSN is a wall-mounted room sensor used in building automation systems to monitor and control indoor temperature and humidity. It outputs 0 to 10V DC signals for both temperature and humidity, enabling precise HVAC regulation in commercial, industrial, and institutional facilities.

What are the specifications of the Siemens QFA32SS.EWSN sensor?

The Siemens QFA32SS.EWSN provides a temperature range of -40°F to 158°F with ±0.90°F accuracy, and a relative humidity range of 0 to 100% with ±2% full-scale accuracy. It features 0 to 10V DC outputs for both signals, screw terminals, a plastic housing, and MP-Bus protocol compatibility for building automation systems.

Where to buy the Siemens QFA32SS.EWSN sensor worldwide?

You can source the Siemens QFA32SS.EWSN sensor worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time; we supply genuine Siemens components for building automation projects.

How to install the Siemens QFA32SS.EWSN wall-mounted sensor?

Mount the Siemens QFA32SS.EWSN on a flat interior wall at typical room height, away from heat sources or drafts. Use the included matching gaskets to seal against the wall. Connect wires to the screw terminals per the wiring diagram for 0 to 10V DC outputs and MP-Bus communication. Ensure the building automation system is configured for the sensor's protocol.

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

Siemens Products

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

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