Siemens QFA21 Series Temperature & Humidity Sensor, Wall, ±3 %RH Corrugated Cardboard
- RS Stock No.:
- 639-102
- Mfr. Part No.:
- QFM2171 / BPZ:QFM2171
- Manufacturer:
- Siemens
Subtotal (1 unit)*
€288.21
(exc. VAT)
€354.50
(inc. VAT)
Temporarily out of stock
- Shipping from 03 April 2026
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units | Per unit |
|---|---|
| 1 + | €288.21 |
*price indicative
- RS Stock No.:
- 639-102
- Mfr. Part No.:
- QFM2171 / BPZ:QFM2171
- Manufacturer:
- Siemens
Specifications
Technical data sheets
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 | ±3 %RH | |
| Mount Type | Wall | |
| Minimum Operating Temperature | -15°C | |
| Maximum Operating Temperature | 60°C | |
| Minimum Supply Voltage | 13.5V | |
| Maximum Supply Voltage | 35V | |
| RH Range | 0 to 100 % | |
| Package Type | Corrugated Cardboard | |
| Height | 222mm | |
| Width | 60 mm | |
| Length | 80mm | |
| Series | QFA21 | |
| Standards/Approvals | CE, EN 60730-1, RCM, UL 873, RoHS | |
| Automotive Standard | No | |
| Select all | ||
|---|---|---|
Brand Siemens | ||
Product Type Temperature & Humidity Sensor | ||
Sub Type Room Sensor | ||
Accuracy ±3 %RH | ||
Mount Type Wall | ||
Minimum Operating Temperature -15°C | ||
Maximum Operating Temperature 60°C | ||
Minimum Supply Voltage 13.5V | ||
Maximum Supply Voltage 35V | ||
RH Range 0 to 100 % | ||
Package Type Corrugated Cardboard | ||
Height 222mm | ||
Width 60 mm | ||
Length 80mm | ||
Series QFA21 | ||
Standards/Approvals CE, EN 60730-1, RCM, UL 873, RoHS | ||
Automotive Standard No | ||
RoHS Status: Exempt
- COO (Country of Origin):
- CN
The Siemens Duct sensor designed to measure both humidity and temperature at DC 4 to 20 mA for precise environmental control in HVAC and ventilation systems. It provides reliable and real-time data to ensure optimal climate regulation within ducts, making it ideal for commercial and industrial applications. The sensor supports efficient building management by delivering accurate readings of both temperature and humidity levels.
Durable and robust design for long term performance
It is used as control sensor and limit sensor
IP54 protection
RoHS compliant