MG811 Carbon Dioxide Sensor

MG811 Carbon Dioxide (CO₂) Gas Sensor Module – Analog CO2 Detection Sensor

The MG811 CO₂ Sensor Module is a high-sensitivity gas detection module designed for measuring carbon dioxide concentration in the air. Built around the MG811 sensor element, it provides reliable analog output for monitoring CO₂ levels in environmental and industrial applications.

This module is ideal for air quality monitoring, ventilation systems, and DIY electronics projects, and can be easily interfaced with microcontrollers such as Arduino, ESP32, and Raspberry Pi.

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Key Features:

• High sensitivity to CO₂ gas – accurate detection of carbon dioxide levels
• Analog output signal – easy integration with microcontrollers
• Fast response time – detects changes quickly
• Stable performance – suitable for continuous monitoring
• Onboard signal conditioning circuit – improved accuracy and usability
• Compact module design – easy to integrate into projects

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Applications:

• Air quality monitoring systems
• Indoor ventilation control
• Smart home and IoT devices
• Environmental monitoring projects
• Greenhouses and agricultural systems
• DIY electronics and Arduino projects

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Specifications:

• Sensor Type: MG811 CO₂ gas sensor
• Detection Gas: Carbon Dioxide (CO₂)
• Output Type: Analog voltage
• Operating Voltage: Typically 5V–6V (module dependent)
• Detection Range: Approx. 350–10,000 ppm CO₂ (typical)
• Warm-up Time: Requires preheating for stable readings
• Interface: Analog output pin

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Package Includes:

• 1 × MG811 CO₂ Gas Sensor Module