MG811 Carbon Dioxide Sensor

MG-811 Carbon Dioxide Sensor Module (Carbon Dioxide Sensor) is a reliable CO2 sensor based on metal oxide sensing technology. The MG811 CO2 sensor works by heating its internal element to a specified temperature, enabling it to detect and separate carbon dioxide (CO2) from the surrounding air efficiently.

This module integrates the mg811 sensing element along with a built-in signal conditioning and heating circuit. The MG-811 CO2 sensor is highly sensitive to carbon dioxide while maintaining lower sensitivity to alcohol and carbon monoxide, making it suitable for accurate environmental monitoring. As CO2 concentration increases, the output voltage changes accordingly, providing measurable analog data.

This CO2 sensor is widely used in applications such as greenhouses, indoor air quality monitoring, and medical projects. It provides an analog signal that decreases as CO2 concentration increases. Additionally, the module includes a digital output pin with TTL logic.

A built-in potentiometer allows users to set a threshold level. Once the configured CO2 level is reached, an onboard LED lights up and the digital output pin goes HIGH, making it easy to integrate threshold-based alert systems.

Why Choose the MG811 CO2 Sensor?

The MG811 CO2 sensor is a popular choice among developers and engineers due to its balance between performance and affordability. When comparing CO2 sensor price in the market, the mg811 stands out as a cost-effective solution for both beginners and advanced IoT projects. Its compatibility with platforms like Arduino and Raspberry Pi makes it a versatile CO2 sensor for air quality monitoring systems.

Features:

• High Sensitivity to CO2: The MG-811 CO2 sensor detects even low concentrations of carbon dioxide
• Analog Voltage Output: Provides variable voltage output corresponding to CO2 levels
• On-board Heating Circuit: Ensures optimal working temperature for the mg811 sensor
• Signal Conditioning Circuit: Improves output accuracy and stability
• Fast Response & Recovery: Quickly reacts to CO2 concentration changes
• Operating Voltage: Typically operates at 6V
• Cost-Effective Solution: A great option for users comparing CO2 sensor price with performance

Applications:

• Air Quality Control
• Ferment Process Control
• Room Temperature CO2 concentration Detection
• Controlling environment horticulture
• Process control

Pinout:

• VCC: 6V ( You can use a4 AA battery holderfor this ).
• AOUT: Analog Output (voltage decreases as CO2 Levels increase).
• DOUT: Digital Output that goes HIGH when the threshold is reached (set the threshold by turning the onboard potentiometer).
• GND: 0V.