
Product details
CO₂, VOC Index, Temperature and Humidity
Sensirion sensors monitor CO₂, VOC Index, temperature and humidity.
- CO₂
- 400–5000 ppmAccuracy: ±5%
- VOC Index
- 0–500
- Temperature
- −10°C to 60°C (14°F to 140°F)Accuracy: ±0.1°C (±0.18°F)
- Relative humidity
- 10–100% RHAccuracy: ±1.0% RH
Adapter power and reporting intervals
USB power supports continuous air-quality monitoring. Use the supplied THIRDREALITY adapter.
Reporting intervals can be set from 30 to 300 seconds through Home Assistant or the THIRDREALITY app.
Use readings in your own automations
Create automations and set thresholds in your compatible hub. For example, an automation could turn on a connected exhaust fan when CO₂ exceeds 1000 ppm, respond to a rise in VOC Index with a purifier, or use humidity to trigger a dehumidifier.
Setup and remote monitoring
Connect the sensor to the supplied power adapter, then pair it through your compatible app and Zigbee hub. After pairing, use the connected app to check readings remotely.
Compatible hubs and connection routes
Compatible options include Home Assistant (ZHA or Zigbee2MQTT), SmartThings (2015/2018), Aeotec, Hubitat, Homey Bridge, Homey Pro and THIRDREALITY Hub Gen2 Plus.
Direct Echo pairing requires a model with a built-in Zigbee hub. The listed models include Echo (4th Gen), Echo Plus (1st and 2nd Gen), Echo Studio, Echo Show 8 (3rd Gen), Echo Show 10 (2nd and 3rd Gen) and Echo Hub.
Apple Home and Google Home connect through Smart Bridge MZ1, sold separately.
Specifications
| Product | THIRDREALITY Smart Air Quality Sensor |
|---|---|
| Measurements | CO₂, VOC Index, temperature and humidity |
| Wireless protocol | Zigbee 3.0 |
| Hub requirement | Compatible Zigbee hub required |
| Sensors | Sensirion |
| CO₂ measurement range | 400–5000 ppm |
| CO₂ accuracy | ±5% |
| VOC Index range | 0–500 |
| Temperature measurement range | −10°C to 60°C (14°F to 140°F) |
| Temperature accuracy | ±0.1°C (±0.18°F) |
| Relative humidity measurement range | 10–100% RH |
| Relative humidity accuracy | ±1.0% RH |
| Recommended operating temperature | 5–60°C (41–140°F) |
| Recommended operating humidity | 20–80% RH |
| Power | USB powered; THIRDREALITY adapter supplied; cables not included |
| Configurable reporting interval | 30–300 seconds |
| Reporting interval configuration | Home Assistant or the THIRDREALITY app |
| Dimensions | 67 × 36 × 86.5 mm (W × D × H) |
| Plug options | US Plug or EU Plug |
Frequently asked questions
What does the sensor measure?
It measures CO₂, VOC Index, temperature and humidity using Sensirion sensors.
Does it need a Zigbee hub?
Yes. The Smart Air Quality Sensor uses Zigbee 3.0 and requires a compatible Zigbee hub.
Can I check readings when I am away?
After pairing the sensor with a compatible hub and app, you can use the connected app to check readings remotely.
How does it connect to Apple Home or Google Home?
Use the Smart Bridge MZ1 route shown in the compatibility guide. Smart Bridge MZ1 is sold separately.
How is the sensor powered?
Use USB power with the supplied THIRDREALITY adapter. Cables are not included.
Can I change the reporting interval?
Reporting intervals from 30 to 300 seconds can be configured through Home Assistant or the THIRDREALITY app.
Can the readings trigger a fan or dehumidifier?
You can use readings in automations configured in your compatible hub to operate connected devices, such as an exhaust fan, purifier or dehumidifier.
Product setup and resources
Zigbee compatibility
Smart Air Quality Sensor is a Zigbee product and requires a compatible Zigbee hub or coordinator before it can be added to an ecosystem.
Use the product manual and firmware history below to confirm setup steps and current platform notes for this SKU.




