DIY How to make Smoke, LPG, Extremely Flammable Gas leakage detector device

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DIY How to make Smoke, LPG, Extremely Flammable Gas leakage detector device

Lpg/Png/Cng Gas Leak Detector & Heat Detector System For Home Safety - https://amzn.to/2qTxbZB

Component -
1. Mq2 module - https://amzn.to/2HjS6A1
2. Transistor BC547- https://amzn.to/2HkSu15
3. Relay 12volt SPDT- https://amzn.to/2HU0SSe
4. 12 volt power supply- https://amzn.to/2qS1ali
5. 5volt power supply- https://amzn.to/2qUndHv
6. buzzer - https://amzn.to/2HDH9c3

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