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 afability, this sensor module ensures long-lasting, efficient, and accurate air quality monitoring to support health and well-being. Enable intelligent adjustment of indoor ventilation systems based on carbon dioxide concentration, helping maintain a healthy environment under low CO2 levels over time. Key Features: - Reference accuracy within specified range: 400–2000 ppm - Power supply voltage range: 2.4–5.5 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. VDD: Power positive input 3. SCL: I2C clock port 4. SDA: I2C data port Board Size: 13.4 x 21.6 mm – Compact design for easy integration into various setups. Note: Product appearance and printed text may vary slightly between batches; this does not affect functionality. Color: As shown Material: PCB Type: B – Gas sensor module (blue board) Package Contents: 1 x Gas Sensor Module (Sensor kit only – other items not included) Note: Lighting and display settings may cause slight color variations between the image and the actual product. Measurement error tolerance: ±1–3 cm.