SCD41-2HA

The SCD41-2HA module measures CO₂ (carbon dioxide) is designed for direct integration into Home Assistant using the ESPHome integration.

It is based on the professional-grade Sensirion SCD41 sensor, a high-precision photoacoustic NDIR CO₂ sensor well suited for indoor air quality monitoring.

The SCD41-2HA module comes fully assembled in a compact 56 × 58 × 28 mm enclosure and requires no hardware configuration.

⚙️ Technical Specifications

Sensor: Sensirion SCD41

Technology: Photoacoustic NDIR

CO₂ Measurement Range: 400 to 5000 ppm

CO₂ Accuracy: ±50 ppm – ±2.5% of measured value

Additional Measurements with the combined AHT20 + BMP280 sensor (included) :

Temperature :  ± 0,3 °C
Humidity : ± 2 %
Pressure : ± 0,12 hPa (relative) et ± 1 hPa (absolue)

Connectivity: Wi-Fi

Integration: Native Home Assistant support via ESPHome integration

Power Supply: 5 V via USB Type-C connector

🔵 Actual versions : Hardware : 1.0 ---- Software : 1.0