MG811 Carbon Dioxide Sensor

This sensor module has an MG-811 ( MG - 811 / MG 811) on-board as the sensor component. There is an on-board signal conditioning circuit for amplifying output signal and an on-board heating circuit for heating the sensor. The MG-811 is highly sensitive to CO2 and less sensitive to alcohol and CO. It could be used in air quality control, ferment process, in-door air monitoring application. The output voltage of the module falls as the concentration of the CO2 increases.

Specifications:

• Operating Voltage: 5V
• Dual signal output (analog output and TTL) Flat output
• TTL output valid signal is low
• One digital output
• Output: 0-2V
• High sensitivity and good selectivity to carbon dioxide
• Main Chip: LM393