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Tzt Mq-2 Mq2 Smoke Gas Lpg Butane Hydrogen Gas Sensor Detector Module For Arduino - Sensors - AliExpress
Arabtronics Center - GAS SENSOR MODULE MQ-2 Arduino MQ2 Gas Module Sensitive gas : Liquefied gas, propane and hydrogen Operating principle: MQ-2 gas sensor applies SnO2 which has a lower conductivity in
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