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CG312 MQ2 Smoke Gas Sensor Module for Arduino (Works with Official Arduino Boards)
Model CG312 Quantity 1 Color Red Material PCB Features Working voltage: DC 5V; Output signal: Stimulation signal Application Smoke£¬ liquefied petroleum gas£¬ butane£¬ propane£¬ methane£¬ alcohol hydrogen£¬ natural gas£¬ etc gas detection Other Great for DIY project Packing List 1 x Gas sensor module