Siemens
Siemens Q140 Outdoor Temperature Sensor
Siemens Q140 outdoor temperature sensor for weather-compensated HVAC.
● In Stock
12-Mo Warranty
Same-Day Dispatch
Ships Worldwide
🎖 Veteran-Owned
In Stock — Ready to Ship
Get a price for Q140
Response within 1 business hour
12-month warranty
All units tested
Same-day dispatch
Order by 2pm CST
Worldwide delivery
US, EU, Asia, Middle East
Veteran-owned
CAGE: 9NK75
Outdoor temperature measurement
Weather-compensated HVAC
Energy efficiency
Building automation
Climate control
Product description
The Siemens Q140 is an outdoor temperature sensor designed to measure ambient air temperature outside a building. This data is critical for weather-compensated control of HVAC systems, enabling efficient energy management and optimal indoor comfort.
It is widely deployed in commercial, industrial, and residential buildings to adjust heating and cooling setpoints based on external weather conditions. The Q140 ensures that the HVAC system operates proactively rather than reactively.
Stanlo Automation, a veteran-owned distributor specializing in surplus industrial parts, carries the Siemens Q140. We provide reliable components to keep your automation systems running.
Technical specifications
| Sensor Type | Temperature |
| Application | Outdoor Sensing |
| Manufacturer | Siemens |
Common applications
HVAC Systems
Building Automation
Weather Stations
Energy Management
Commercial Facilities
Compatible systems
Siemens HVAC controllers
Building automation systems
Weather-compensated control logic
Also known as
Siemens Q140 Outdoor Sensor
Q140 Weather Sensor
Replaces / compatible with
This sensor is part of Siemens' environmental sensing product line for HVAC and building automation.
Technical note
Expert tip
Mount the Siemens Q140 sensor on a north-facing wall or in a location shielded from direct solar gain for accurate outdoor temperature readings.What happens next?
1
Email confirmation
Immediate receipt acknowledgment sent to you
2
Account manager assigned
Confirms your part's spec and condition
3
Your quote delivered
Tailored to your specific requirements
Frequently asked questions
How does the Siemens Q140 outdoor temperature sensor contribute to energy savings?
The Siemens Q140 outdoor temperature sensor provides real-time external temperature data to the HVAC system. This allows the system to intelligently adjust heating and cooling output, preventing over-conditioning and reducing energy consumption.