A. Introducing the Gas Sensor Module - Enhance your environment with precise monitoring of CO2 levels, essential for maintaining indoor air quality. Combining accuracy with affordability. B. Empower your indoor spaces with the sensor Module, ensuring long-lasting, efficient, and accurate air quality monitoring to promote health and well-being. C. Intelligent adjustment of indoor ventilation systems can be achieved based on carbon dioxide concentration, and indoor air quality helps to maintain a healthy environment under low carbon dioxide concentration for a period of time. D. Reference accuracy, specified range 400-2000 ppm. E. Power supply voltage range: 2.4-5.5 V. F. Precision: (40 ppm+5%). G. Digital I2C interface. H. Integrated temperature and humidity sensors. I. Low power operation to Less than 0.4 mA average value @ 5 V, 1 measure/ 5 minutes. J. Interface definition: 1. GND: Power negative input port; 2. : Power positive input port; 3. SCL: I2C clock port; 4. SDA: I2C data port. K. Board size: 13.4 x 21.6mm- Compact yet effective, fit effortlessly in a wide range of setups. L. Due to different batches, there may be differences in product appearance and printed text, which will not affect use. M. Colour: As Shown. N. Material: PCB. O. Type: B: Gas sensor module blue board. P. Package Contents: 1x Gas Sensor Module Detects kit. Only the above package content, other products are not included. Q. 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.