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MQ2 High Sensitivity Gas Smoke Detector Sensor - Red + Silver
Model MQ2 Quantity 1 Color Red + silver Material PCB board Features Adjustable sensitivity Specification Input voltage: 5 +/- 0.2V; DOUT: Digital signal output; LED lights on when detected gas; AOUT: analog signal output£¬ the output is the analog value of detected voltage; GND: Power supply negative pole; Application Suitable for home / industry gas and smoke detection using Packing List 1 x Gas smoke detector board