10pcs Winsen MQ-2/MQ-2B Semiconductor Sensor for Flammable Gas,Smoke Detecting Gas Leakage Alarm Long Lifespan 300-10000ppm

10pcs Winsen MQ-2/MQ-2B Semiconductor Sensor for Flammable Gas,Smoke Detecting Gas Leakage Alarm Long Lifespan 300-10000ppm
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sku: 33004390078
$11.30+9%
$12.34
Shipping from: China
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