Siemens QFA21 Series Temperature & Humidity Sensor, Wall, ±3 %RH Corrugated Cardboard
- RS Stock No.:
- 639-101
- Mfr. Part No.:
- QFM2150/MO / S55720-S467
- Brand:
- Siemens
Subtotal (1 unit)*
£226.77
(exc. VAT)
£272.12
(inc. VAT)
FREE delivery for orders over £50.00
Stocked by manufacturer
- Ready to ship from 16 April 2026
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units | Per unit |
|---|---|
| 1 + | £226.77 |
*price indicative
- RS Stock No.:
- 639-101
- Mfr. Part No.:
- QFM2150/MO / S55720-S467
- 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 | ±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, RoHS, UL 873, EN 60730-1, RCM | |
| 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, RoHS, UL 873, EN 60730-1, RCM | ||
Automotive Standard No | ||
RoHS Status: Exempt
- COO (Country of Origin):
- CN
The Siemens Duct sensor designed to measure both humidity and temperature, offering reliable environmental monitoring for HVAC systems. Using the Modbus communication protocol, it ensures seamless integration into building automation systems, providing real-time data for efficient climate control. Ideal for industrial, commercial, and residential applications, this sensor helps optimize ventilation and air quality. Its robust and durable design ensures long-lasting, accurate performance in duct environments.
IP54 protection
CE and UKCA compliant
RoHS compliant