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Description: 1. MG811 is a highly accurate and sensitive Carbon Dioxide (CO2) sensor designed for use in carbon dioxide detector modules. It utilizes an electrochemical gas sensor element to detect CO2 levels. 2. Features: Compact size (35mm x 16mm), low power consumption (<10mA), adjustable alarm threshold level, high accuracy (+/- 3% for 0-5000ppm CO2 range), and long sensor life. 3. Applications: Ideal for monitoring CO2 levels in greenhouses, laboratories, industrial processes, vehicle interiors, and home automation systems to ensure optimal indoor air quality and safety. 4. Operating Principle: The MG811 sensor measures the change in voltage generated due to the CO2 gas reaction with the sensor element to determine CO2 levels. This information is then transmitted to a microcontroller or display device for interpretation and action (alarm, logging, etc.). 5. Communication Interface: The sensor offers various communication interfaces such as I²C, UART, and PWM to allow seamless integration
| Specification | Details |
|---|---|
| Operating Voltage | 3.3V to 5V (DC) |
| Current Consumption | Typically < 2mA |
| CO2 Sensitivity | ±50ppm ±10% of reading |
| Response Time | < 1 minute |
| Measurement Range | 0-2000ppm |
| Accuracy | ±5% @ room temperature and atmospheric pressure |
| Temperature Range | -20°C to +40°C |
| Humidity Range | 10-80% relative humidity |
| Communication Interface | I2C or SPI ( selectable via jumpers) |
| Dimension | 24 x 15 x 6mm |
