Sensor CO2 detection of this dangerous gas resulting from the incomplete combustion gas burner equipment, and the contaminants will have to be, and immediately you will know.
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To keep their lives and their loved ones in front of the gas death hooray for carbon monoxide (co this product is a smart house to the market has supplied. The sensor to gas CO2 sensitive, and if the concentration over the size of this dangerous gas in the place of life, or workshop, etc. you through your cell phone know track.