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Gravity: Analog CO2 Gas Sensor (MG-811 Sensor)

SKU TPX00029 Barcode SEN0159 Show more
Original price €44,61 - Original price €44,61
Original price
€44,61 - €44,61
Current price €44,61

This is the first CO2 sensor compatible with your Arduino.


Great and powerful sensor for everyone that wants to know the exact concentration of CO2(Carbon Dioxide) in the air. 

This is the first CO2 sensor compatible with Arduino. The output voltage of the module falls as the concentration of the CO2 increases. The potentiometer onboard is designed to set the threshold of voltage. As long as the CO2 concentration is high enough (the voltage is lower than the threshold),  a digital signal (ON/OFF) will be released.

  • It has MG-811 sensor module which is highly sensitive to CO2 and less sensitive to alcohol and CO, low humidity & temperature dependency. 
  • Onboard heating circuit brings the best temperature for sensor to function. Internal power boosting to 6V for heating sensor best performance. 
  • This sensor has an onboard conditioning circuit for amplifying output signal. 

To ease the difficulty of using this CO2 sensor,  a Gravity Interface is adapted to allow plug&play. The Arduino IO expansion shield is the best match for this CO2 senor connecting to your Arduino microcontroller. 

This is an electrochemical Arduino-based CO2 sensor, it is suitable for qualitative analysis. 

  • Air Quality Control
  • Ferment Process Control
  • Room Temperature CO2 concentration Detection


Tech specs


Operating Voltage 5V
Interface Gravity Analog
Surface Immersion gold surface
Connector High quality
Output One digital output
Onboard Heating circuit
Size 32x42mm (1.26x1.65")


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