Carbon dioxide is an important indicator of indoor air quality. The SCD41 is a next-generation micro carbon dioxide sensor from Sensirion. The SCD41 offers high precision and excellent cost performance. The module features a 2.54 mm pitch pin header for power supply and communication connections. On-chip temperature and humidity compensation enables accurate temperature and humidity measurement using the built-in sensors. The SCD41 can support intelligent control of indoor ventilation systems based on CO₂ concentration levels. Maintaining low CO₂ levels helps support a healthy and efficient indoor environment. Features: - Reference accuracy in the range of 400–2000 ppm - Supply voltage range: 2.4–5.5 V - High accuracy: ±(40 ppm + 5%) - Digital I²C interface - Integrated temperature and humidity sensor - Low power consumption: < 0.4 mA average at 5 V, 1 measurement per 5 minutes Pin Definitions: 1. GND: Ground (negative power supply terminal) 2. VDD: Positive power supply terminal 3. SCL: I²C clock line 4. SDA: I²C data line Material: PC + Metal Color: Blue Package Includes: - 1 × SCD41 sensor module Note: Color appearance may vary slightly due to lighting conditions and display settings. Measurement tolerance: ±1–3 cm.