Trane WCS-SCO2
CO2 sensors are used to control ventilation systems and monitor indoor air quality. They can be stand-alone sensors or integrated into thermostats or air quality monitoring platforms.
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Trane WCS-SCO2
Carbon dioxide sensor for long term monitoring that operates on two AA batteries.
Hub Highlights:
- Does not display CO2 value on device. Data display options available through building automation system integration.
- Part of Trane AirFi system and compatible with any Trane buiding automation systems that have a wireless communication interface.
- Excellent performance on Hub CO2 accuracy testing protocols
- Includes CO2 and occupancy sensors
Last Edited on: 6/26/2025
| Sensor Type | Non-dispersive infrared (NDIR) Manufacturer: Senseair |
| Power Input | Two AA Batteries |
| Outputs | Bacnet (requires controllers) |
| Altitude Correction Method | Automatic via pressure sensor |
| Measurement Range | 0-10,000 ppm |
| Reported Accuracy | ± (40 ppm + 3% of reading) |
| Display of C02 Value | Web (account required) |
| Uses Automatic Background Calibration (ABC) | Yes |
| Model | WCS-SCO2 |
| Date of Test | November 2-3, 2023 |
| Sample Size | 5 |
|
Error of CO2 measurement @1100 ppm (average) (ppm)
|
-16 |
|
Error of CO2 measurement @ 1100 ppm (standard deviation) (ppm)
|
12 |
|
Accuracy Metric
|
less than ±75ppm |
|
Noise of CO2 measurement @1100 ppm (Average) (ppm)
|
8 |
|
CO2 Full results
|
See Box Plot |
| Operating Power for Sensor (watts) | Sensor: (2) AA Batteries UC-400 Controller: 0.30 |
| Operating Power for Gateway (watts) | 3.62 |
|
Operating Power for Sensor + Gateway (watts)
|
0.66 + (2) AA Batteries |
| Operating Power Category | less than ±1 W |
| Maximum Number of Sensors per Gateway | 180 |
Data Collection
Sample Size
5
Data Source: Staff at the UC Davis Western Cooling Efficiency Center
User interface
1. Can the sensor display the CO2 level to occupants? If yes describe.
No
User interface
2. Can the sensor display a visual indicator to occupants that the CO2 level has exceeded a programmed threshold? If yes, describe (what does the indicator look like, what the default thresholds are, and can the threshold be changed).
No
Reporting capabilities
3. Can the sensor alert facilities (such as an email, text, or call phone application) when the CO2 level has exceeded a programmed threshold? If yes, describe (what does the indicator look like and can the threshold be changed).
Yes - Through BAS integration
Integration capabilities
4. Can the CO2 sensor interface with a building automation system (BAS) or demand control ventilation (DCV) system controller? If yes, describe if integration capabilities are vendor specific.
Yes - Trane BAS only
Integration capabilities
5. If sensor can interface with a BAS or DCV system controller, is additional hardware required?
Yes - Trane Tracer SC+ System Controller and Trane Air-Fi Wireless Communication Interface required
Reporting capabilities, Integration capabilities
6. How can the CO2 sensor data be logged? If proprietary software, describe (what type of account is needed, what logging intervals are available, what does it look like, and describe its capabilities including data download capabilities).
Logged data available through Trane BAS that requires a login. Trane reports that a public-facing website can be built to display the data.
Installation
7. Does the sensor require specialized software for installation? If yes, describe.
Yes - Requires a Trane BAS account
Installation
8. Does the sensor require specialized training for installation? If yes, describe.
No
Operation
9. Does the sensor require on-going maintenance? If yes, describe.
No
Operation
10. Does the sensor require service contracts for ongoing data access? If yes, describe.
No
Miscellaneous
11. Are there any other notes about the user experience?
Includes occupancy sensor that decreases data logging frequency during low occupancy.