Solid Electrolyte CO2 Sensor MG811

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MG811 electrolyte CO2 sensor is a semiconductor oxide chemical sensor that uses the principle of solid electrolyte battery to detect CO2. When the sensor is kept at a certain working temperature and placed in a CO2 atmosphere, the positive and negative electrodes of the battery react with each other, an electromotive force is generated between the sensitive electrode and the reference electrode of the sensor, and the output signal voltage is inversely proportional to the logarithm of the COconcentration. The change of test signal voltage can detect the change of CO2 concentration.


* Good sensitivity and selectivity to CO2
* Low humidity and temperature dependency          
* Long stability and repeatability 

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Smart Agriculture Greenhouse

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Indoor Air Quality Monitoring

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Specification Product Size

Technical Data Sheet

Symbol Parameter Name Technical parameter Remarks
VH Heating Voltage 6.0±0.1 V AC  or  DC
RH Heating Resistor 30.0±5%Ω Room Temperature
IH Heating Current About 200mA  
PH Heating Power About 1200mW  
Tao Operating Temperature -20—50℃  
Tas Storage Temperature -20—70℃  
D E M F Output Signal 30—50mV 350—10000ppmCO2


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As a pioneer in gas sensor based solutions with the advanced processes, technologies and products, Winsen offers a wide range of gas sensors:


As a pioneer in gas sensor based solutions with the advanced processes, technologies and products, Winsen offers a wide range of gas sensors:


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We have 17 sensor series, 200+ categories, and 300+ detection objects for gas detection. Such as CO, CO2, VOC, PM2.5, CH4, LPG and so on. In particular, we also have MEMS sensors. According to your industry application, gas principle, power consumption, accuracy, and range requirements, and we can select a specific model for you. You can also use the product filter below to choose a suitable product, or choose online serivce.

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Winsen is a factory with over 30,000 square meters area and 500+ production machines which is focusing on sensors development&manufacturing. It has strong R&D strength with more than 100 R&D personnel.

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1-7 days after received payment

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The warranty period is one year from the date of shipment. If the appearance of the product is not damaged, it can be returned after confirmation. For damage not caused by Winsen, the customer shall bear all maintenance costs.

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