MQ4 gas Sensor uses methane gas sensor as a gas sensitive element. It requires no external components and is easy to use
![I have MQ-4 sensors like the one pictured. No instructions and can't find any regarding the sensitivity pot and how to adjust it. Anyone know? Other tips for these sensors also welcome! : I have MQ-4 sensors like the one pictured. No instructions and can't find any regarding the sensitivity pot and how to adjust it. Anyone know? Other tips for these sensors also welcome! :](https://i.redd.it/tkjtvfq9zs161.jpg)
I have MQ-4 sensors like the one pictured. No instructions and can't find any regarding the sensitivity pot and how to adjust it. Anyone know? Other tips for these sensors also welcome! :
![10pcs MQ-4 Methane Natural Gas Sensor Module Shield Liquefied Electronic Detector Module For - Module Board For Arduino Sensor & Detector Module - - Amazon.com 10pcs MQ-4 Methane Natural Gas Sensor Module Shield Liquefied Electronic Detector Module For - Module Board For Arduino Sensor & Detector Module - - Amazon.com](https://m.media-amazon.com/images/I/41XgSYyPBrL._AC_UF894,1000_QL80_.jpg)