MQ‑9 gas module
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1 Way 1 Channel 10A 12VDC Relay Module with Opto Isolated High & Low Trigger With Screw Terminal
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The MQ-9 is a gas sensor module designed to detect LPG, CH4 (methane), and CO (carbon monoxide) with high sensitivity. It provides an analog output and is ideal for use in gas leak detection, air quality monitoring, and safety systems.
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