Detector of Gas CH4 { Methan, and Butan }, and Detector of Gas CH4 + Co Buyer and Importer

Standard gas detector to command a 3/4 or 1/2 valve that works at 220V. Not accepted command of valve at 12V! ! ! ! . The detection of gas need to be very good, with good quality sensor. This request is only for producers, not for traders Thanks be very good, with good quality sensor. This request is only for producers, not for traders Thanks Show More