Siemens QFA31 Series Temperature & Humidity Sensor, Wall, ±2 %RH Corrugated Cardboard
- RS Stock No.:
- 639-110
- Mfr. Part No.:
- QFM3173D / S55720-S634
- Brand:
- Siemens
Subtotal (1 unit)*
£324.10
(exc. VAT)
£388.92
(inc. VAT)
FREE delivery for orders over £50.00
Stocked by manufacturer
- Ready to ship from 15 April 2026
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units | Per unit |
|---|---|
| 1 + | £324.10 |
*price indicative
- RS Stock No.:
- 639-110
- Mfr. Part No.:
- QFM3173D / S55720-S634
- Brand:
- Siemens
Specifications
Technical Reference
Legislation and Compliance
Product Details
Find similar products by selecting one or more attributes.
Select all | Attribute | Value |
|---|---|---|
| Brand | Siemens | |
| Product Type | Temperature & Humidity Sensor | |
| Sub Type | Room Sensor | |
| Accuracy | ±2 %RH | |
| Mount Type | Wall | |
| Minimum Operating Temperature | -40°C | |
| Maximum Operating Temperature | 70°C | |
| Minimum Supply Voltage | 13.5V | |
| Maximum Supply Voltage | 35V | |
| RH Range | 0 to 100 % | |
| Package Type | Corrugated Cardboard | |
| Series | QFA31 | |
| Length | 80mm | |
| Width | 60 mm | |
| Height | 274mm | |
| Standards/Approvals | EN 60730-1, CE, RCM, UL 873, RoHS | |
| Automotive Standard | No | |
| Select all | ||
|---|---|---|
Brand Siemens | ||
Product Type Temperature & Humidity Sensor | ||
Sub Type Room Sensor | ||
Accuracy ±2 %RH | ||
Mount Type Wall | ||
Minimum Operating Temperature -40°C | ||
Maximum Operating Temperature 70°C | ||
Minimum Supply Voltage 13.5V | ||
Maximum Supply Voltage 35V | ||
RH Range 0 to 100 % | ||
Package Type Corrugated Cardboard | ||
Series QFA31 | ||
Length 80mm | ||
Width 60 mm | ||
Height 274mm | ||
Standards/Approvals EN 60730-1, CE, RCM, UL 873, RoHS | ||
Automotive Standard No | ||
RoHS Status: Exempt
- COO (Country of Origin):
- CN
The Siemens duct sensor designed to measure both relative humidity and temperature with high precision, making it perfect for demanding HVAC and building management applications. It provides reliable, real-time data to optimize climate control and air quality in complex commercial, industrial, and residential environments. This sensor is engineered for integration into building automation systems, ensuring efficient and effective environmental regulation.
Durable and robust design for long term performance
Capacitive humidity measurement
Display to show measured value
IP65 protection
RoHS compliant