Any one know where I can find the datasheet/specs for these two sensors/sensor modules—Keyes 140C02 MQ-S2/MQ-S3
Hi @;
Does this help?
RV mineirin
MQ S2
Here are the complete specifications
| Operating voltage | 5V |
|---|---|
| Load resistance | 20 KΩ |
| Heater resistance | 33Ω ± 5% |
| Heating consumption | <800mw |
| Sensing Resistance | 10 KΩ – 60 KΩ |
| Concentration Scope | 200 – 10000ppm |
| Preheat Time | Over 24 hour |
MQ S3
Here are the complete specifications
| Operating voltage | 5V |
|---|---|
| Load resistance | 200 KΩ |
| Heater resistance | 33Ω ± 5% |
| Heating consumption | <800mw |
| Sensing Resistance | 1 MΩ – 8 MΩ |
| Concentration Scope | 25 – 500 ppm |
| Preheat Time | Over 24 hour |
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Any info on what gasses can they detect?
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