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Carbon Monoxide gas sensor module for Arduino MQ-7 :: Sensors :: Hobby Electronics :: Cricklewood Electronics
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3pcs MQ-7 Carbon Monoxide CO Gas Sensor Module Analog and Digital Output RobotDyn for Arduino - products that work with official for Arduino boards Electronic parts : Amazon.co.uk: DIY & Tools
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Protection system for coal home heating , gsm alarm , temperature, pressure - Home Automation - Arduino Forum
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