Smart CO₂ Sensor for Healthier Air and Automatic Ventilation
This indoor sensor is designed and configured to fully integrate with the Smarwi system for automated ventilation and window control. It is equipped with a sensor that monitors the concentration of carbon dioxide (CO₂) in the air. When the set limits are exceeded, the sensor automatically sends a signal to the Smarwi controller, which opens the window to improve ventilation. CO₂ is a reliable indicator of indoor air quality and room occupancy. High levels (above approximately 1200 ppm) reduce concentration, cause fatigue, headaches, and other discomforts.
Sensor Start
When powered on, all indicator lights briefly flash. Within one minute, the sensor is ready for use, and after four days of continuous operation, it reaches maximum accuracy.
Error Indication
If all indicator lights remain permanently lit at the same time, it indicates a sensor malfunction.
Setting the Relay Switching Level
The relay can be easily adjusted using the rotary selector:
- Adjustment range: 0–100% corresponds to the selected CO₂ concentration range (e.g., 0–2000 ppm).
- Activation: the relay switches on whenever the CO₂ concentration exceeds the set value.
- Deactivation: the relay switches off when the value drops below the set level reduced by the hysteresis (5% of the total range).
- Minimum delay: there is always at least a 2-minute delay between relay state changes.
If the range is set to 0–2000 ppm and the selector is at 50%, this corresponds to a switching value of 1000 ppm. The relay will switch on when this level is exceeded and will switch off when the CO₂ concentration drops below 900 ppm (1000 ppm – 5% of range = 1000 – 100).
Automatic CO₂ Sensor Calibration
The sensor features an automatic calibration function that continuously adjusts measurements and compensates for the aging of individual components. This eliminates the need for manual calibration — the sensor maintains accuracy throughout its lifetime. The function is active when continuously powered.
How Many Sensors Can Be Connected?
Only one sensor can be connected to the Smarwi system at a time. Choose the one that best fits your home’s needs. It’s not possible to use multiple sensors simultaneously.
Advantages of the Integrated Solution
- Safe low-voltage connection
- Automatic monitoring of air quality level
- Direct connection with the Smarwi control button
- Manual ventilation activation by pressing the button on the sensor
- Discreet design suitable for living spaces
Technical Specifications
- Power supply: 12 V DC
- Maximum power consumption: max. 1.5 W
- Selectable range: 400 – 1,000 / 2,000 / 5,000 ppm
- Operating temperature: 0 – 50 °C
- Operating humidity: 5 – 95 % RH
- Storage temperature: -20 – 60 °C
- Expected lifespan: > 10 years
- Automatic LED dimming at night
- Operates using advanced optical NDIR technology
