MQ136 MQ138 MQ139 MG811 TGS813 Detection Hydrogen Sulfide Formaldehyde Freon Carbon Dioxide Combustible Gas Sensor Module

MQ136 MQ138 MQ139 MG811 TGS813 Detection Hydrogen Sulfide Formaldehyde Freon Carbon Dioxide Combustible Gas Sensor Module
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sku: 1005003903060841
$8.02
Shipping from: China
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