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@ -22,6 +22,14 @@ MQ4.update();
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float ppmCH4 = MQ4.readSensor();
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```
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## Wiring
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### Arduino
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### ESP8266
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### User Manual New!! 12.2019
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[Manual](https://drive.google.com/open?id=1BAFInlvqKR7h81zETtjz4_RC2EssvFWX)
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