Description
The Space Plus: Radon and CO2 Indoor Air Quality Monitor is designed to provide real-time air quality insights across 7 key sensors – including radon, carbon dioxide, VOCs, temperature, humidity, pressure, noise, and light.
Designed for HVAC professionals, ESG managers, and compliance officers, this desktop or wall-mount solution features visual air quality indication, presence detection, and seamless integration via the smart link to ensure IAQ compliance and support WELL and ESG goals.
👉 Not sure which IAQ monitor you need? Take our 2-minute quiz to find your perfect product match and recommendation.
Note: CO2Meter ‘SPACE’ Indoor Air Quality solutions are available and supported only within the U.S. For international orders, please contact us.
Note: A CM-305 Space Hub and Annual Subscription are required with this IAQ Monitor for Data Access & Dashboard Integration. Contact us for more information.
Features
- Multi-sensor gas monitoring: Tracks radon, carbon dioxide, VOCs, temperature, humidity, light pressure, and noise
- Wireless and scalable – Easy installation without the need for complex wiring
- Visual Indicator Ring – Red, yellow, and green glow ring dependent upon quality
- Supports ESG and WELL compliance – Monitors key metrics aligned with healthy building standards
- Connectivity: Integrates with the Smart Link/Space Hub
- Long battery life – Up to 10 years of power for low-maintenance operation
- Smart alerts and insights – Improve ventilation and reduce energy waste with actionable data
Need help choosing the right plan or have questions? Contact us to learn more.
Specifications
Radon:
- Radon sampling: Passive diffusion chamber
- Detection method: Alpha spectrometry
- Measurement range: 0 – 20,000 Bq/m3
- Accuracy/precision: at 200 Bq/m3: After 7 days ~ 10 % After 2 months ~ 5 %
IAQ Sensor Specifications:
- Sensor sampling interval: 5 minutes
- Sensor to cloud latency: 5 – 10 minutes
Sensor Resolution:
- Temperature ∓ 0.1°C
- Humidity ∓ 1%
- Pressure ∓ 0.15hPa
Settling time:
- TVOC ~ 7 days
- CO₂ ~ 7 days
CO2 details:
- Sensing Technology: NDIR Sensor (Non-Dispersive Infra-Red):
- Measurement Range: 400–5000 ppm
- Non condensing: 0 – 85%RH
- Optimum Accuracy: ±30ppm ±3% within 15 – 35°C and 0 – 80% RH
- Multiple settling cycles: locations with natural indoor CO2 fluctuations
- Relative light intensity: (0 – 100%)
General Specifications:
- Operational Environment: 4°C to 40°C
- Weight: 219g (with batteries)
- Dimensions: 12 cm (diameter) x 3.6 cm (height)
- Power: 2 AA ultra long lifetime batteries
- Connectivity: SmartLink
- Long range (>1km line of sight) and low power
- Supports 865-870MHz and 902-928MHz
- Based on IEEE 802.15.4g with FHSS, 50kbps
Warranty
- 1 year – See CO2Meter Terms and Conditions
Documents
Data Sheet (pdf)
Manual (pdf)
CO2Meter IAQ Comparison Chart (pdf)
Accessories
- CM-305: Space Hub for Data Access and Dashboard
- AS-SPACE PLUS: Annual Subscription
- Space Plus Wall Bracket: please contact us directly for this accessory.
Explore more from our collection.






Reviews
There are no reviews yet.