Carbon dioxide is a key indicator of indoor air quality and can impair human cognitive abilities and well-being. The SCD40 is next-generation miniature carbon dioxide sensor. The SCD41 offers high precision and cost-effectiveness. The module features power and communication pins via a pin interface. The chip includes built-in temperature and humidity compensation functionality, enabling humidity and temperature measurement through integrated temperature and humidity sensors. The SCD41 enables intelligent regulation of indoor ventilation systems based on carbon dioxide concentration. At low carbon dioxide concentrations, indoor air quality helps maintain a healthy and efficient environment. Reference accuracy, specified range: 400-5000 ppm Supply voltage range: 2.4-5.5 V High precision: (40 ppm + 5%) Digital I2C interface Integrated temperature and humidity sensors Interface definition: 1. GND: Power supply negative input port 2. : Power supply positive input port 3. SCL: I2C clock port 4. SDA: I2C data port Color: Red Material: PCB Package Contents: 1 * SCD41 gas sensor module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.