Introducing the Gas Sensor Module enhance your environment with precise monitoring of CO2 levels, essential for maintaining optimal indoor air quality. Combining high accuracy with affordability, this module ensures long-lasting, efficient, and accurate air quality monitoring to promote health and well-being. Intelligent adjustment of indoor ventilation systems can be achieved based on carbon dioxide concentration, helping maintain a healthy indoor environment under low CO2 levels. - Reference accuracy within the range of 4002000 ppm - Power supply voltage range: 2.45.5 V - High precision: (40 ppm + 5%) - Digital I2C interface - Integrated temperature and humidity sensors - Low power operation: less than 0.4 mA average @ 5 V, 1 measurement every 5 minutes Interface definition: 1. GND: Power negative input 2. VCC: Power positive input 3. SCL: I2C clock port 4. SDA: I2C data port Board size: 13.4 x 21.6 mm compact yet highly effective, easily fits into a wide variety of setups. Note: Due to different production batches, there may be slight variations in product appearance and printed text. These differences do not affect functionality. Color: As shown Material: PCB Type: B Gas sensor module blue board Package contents: 1 x Gas Sensor Module Detection Kit Note: Light reflection and display settings may cause slight color variations between the image and the actual item. Measurement error allowance is +/- 13 cm.