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
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