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Original MQ-8 Hydrogen Gas Sensor Test Warning Detection Alarm Module For Arduino US

60 % of buyers enjoyed this product!
Availability: in stock
Price:  US $6 / piece
Sale Price:  US $ 1.92 / piece
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Features:
With a signal output instruction. 
Dual signal output (TTL level output and analog output) 
TTL output valid signal for low level. ( when the low output electric signal lights at 4. ordinary times, can be directly pick up SCM) 
Analog 0 ~ 5 v voltage, the higher the concentration, the higher the voltage. 
High sensitivity to hydrogen 
Can be resistant to ethanol steam, LPG (petroleum), smoke interference 
Has a long service life and reliable stability 
Quick response recovery features

Specification:
Size: approx. 32 X 22 X 27 mm/1.26 X 0.87 X 1.06"
Chip: the LM393, MQ-8 gas sensor 
Working Voltage: DC5V

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DHL 3 - 7 days
UPS Expedited 3 - 7 days
EMS 5 - 14 days
Post Air Mail Free Shipping 15 - 45 days
Return Policy If the product you receive is not as described or low quality, the seller promises that you may return it before order completion (when you click "Confirm Order Received" or exceed confirmation timeframe) and receive a full refund. The return shipping fee will be paid by you. Or, you can choose to keep the product and agree the refund amount directly with the seller.

N.B.: If the seller provides the "Longer Protection" service on this product, you may ask for refund up to 15 days after order completion.
Seller Service On-time DeliveryIf you do not receive your purchase within 60 days, you can ask for a full refund before order completion (when you click "Confirm Order Received" or exceed confirmation timeframe).

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Price:  US $6 / piece
Sale Price:  US $ 1.92 / piece
from AliExpress
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