Datasheets/Specs for MQ-S2 and MQ-S3

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?

https://lastminuteengineers.com/mq2-gas-senser-arduino-tutorial/

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