Carbon dioxide is a key indicator of indoor air quality, impacting cognitive function and well-being. The SCD41 is a next-generation CO2 sensor from Sensirion, offering high precision and cost-effectiveness. The module features power and communication pins with a 2.54mm pin interface. On-chip temperature and humidity compensation is achieved through a built-in sensor. The SCD41 enables intelligent control of indoor ventilation systems based on CO2 concentration, helping maintain a healthy and productive environment. Features: Reference accuracy, specified range 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: less than 0.4 Ma on average @ 5 V, 1 measurement/5 minutes Interface definition: 1. GND: negative power input 2. : positive power input 3. SCL: I2C clock port 4. SDA: I2C data port Material: PC+Metal Color: blue Package Contents:1 x 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.