Gravity: Analog Electrochemical Carbon Dioxide Sensor (0-10000 ppm)

SKU:SEN0159 Brand:DFRobot Reward Points: 489
In Stock
Topic: Gravity
Quantity Based Price
  • 3-4$47.50
  • 5-9$46.50
  • 10+$45.00
* Model:
Expected Restock Date: [[restockDate]]


"Greenhouse Effect" is melting the Earth ice core every minute and creating dangerous icebergs. By knowing the exact concentration of CO2(Carbon Dioxide), we can do something to reduce the CO2 and to protect our Earth. Here is the Arduino-based CO2 sensor designed by DFRobot lovely engineer.

This is the first CO2 sensor in the Arduino market.  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 the 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 sensor connecting to your Arduino microcontroller

This is an electrochemical Arduino-based CO2 sensor, it is suitable for qualitative analysis. DFRobot also developed other Infrared CO2 sensors, which are suitable for quantitative analysis.

1. Gravity: Analog Infrared CO2 Sensor For Arduino (0~5000 ppm), high precision, apply to Arduino and other microcontrollers with ADC function.

2. Gravity: UART Infrared CO2 Sensor (0-50000ppm), wide range, apply to Arduino, Raspberry Pi and other microcontrollers with UART function.

Gravity CO2 Sensor Selection Guide

Product Name Gravity: Analog Electrochemistry CO2 Sensor Gravity: Analog IR CO2 Sensor Gravity: UART IR CO2 Sensor Gravity: I2C SCD41 Infrared CO2 Sensor (400 - 5000 ppm)
SKU SEN0159 SEN0219 SEN0220 SEN0536
Operation Voltage 3.7~5V 4.5~5.5V 4.5~5.5V 3.3V-5V
Gravity: Analog
3P Header Digital Output(Alarm):0~VCC Level
Gravity: Analog
(Analog Output 0.42V)
Gravity: UART
(03.3V Level)
Gravity: I2C
Measurement Principle
Solid electrolyte battery principle
NDIR(non-dispersive infrared) NDIR(non-dispersive infrared) photoacoustic NDIR
Measurement Range 0~10000 ppm 400~5000 ppm 0~50000 ppm 400~5000ppm
Accuracy ±100ppm@400ppm ±(100ppm + 6% readings) ±(100ppm + 6% readings) ±(40 ppm + 5% MV)



<20s <90s <30s 60S



<1W <430mW@5V <430mW@5V <30mW@5V
Operation Temperature -20℃~50℃ 0℃~50℃ 0℃~50℃ -10℃~60℃
Operation Humidity 0~95% RH (No condensation) 0~95% RH (No condensation) 0~95% RH (No condensation) 0~95% RH (No condensation)
Lifespan >1 year >5 years >5 years >10 years
32*42 mm 37*69 mm 21*27.1 mm 32*27*8mm
1. Large Range
2. Adjustable Alarm Threshold
3. Fast Response
4. Analog Output
1. High Accuracy
2. Long Lifespan
3. Auto Temperature Compensation
4. Water Vapor Interference Resistance
5. Ananglog Output
1. High Accuracy
2. Large Range
3. Long Lifespan
4. Auto Temperature Compensation
5. Water Vapor Interference Resistance
6.3.3V UART Output
1.CO2, temperature, and humidity, three in one
2. Small size of 32*27*8mm
3. Low power, average current<4mA


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


  • Operating Voltage:5V
  • Interface: Gravity Analog
  • One digital output
  • High-quality connector
  • Immersion gold surface
  • Onboard heating circuit
  • Size:32x42mm (1.26x1.65")


Shipping List

  • Gravity: Analog Electrochemical Carbon Dioxide Sensor (0-10000 ppm) x1


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    2022-06-25 18:19:45




Gravity: Analog Electrochemical Carbon Dioxide Sensor (0-10000 ppm)

In Stock
  • 3-4$47.50
  • 5-9$46.50
  • 10+$45.00