Gas detection module MQ-2 MQ-3 MQ-4 MQ-5 MQ-6 MQ-7 MQ-8 MQ-9 MQ-135 senso module each of them 1pcs total 9pcs sensor kit
![Gas detection module MQ-2 MQ-3 MQ-4 MQ-5 MQ-6 MQ-7 MQ-8 MQ-9 MQ-135 senso module each of them 1pcs total 9pcs sensor kit](http://ae01.alicdn.com/kf/HTB1nQe4OXXXXXcvXpXXq6xXFXXXf/Gas-detection-module-MQ-2-MQ-3-MQ-4-MQ-5-MQ-6-MQ-7-MQ.jpg_350x350.jpg)
sku: 32637569805
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$12.15
Shipping from: China
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