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WASP-D4 portable multi combustible gas detector

1)Detecting gas: CO,O2,H2S,EX. other gas be customizable.2)GRI smart sensor platform, ec,lel,pid IR four gas can be combined freely.3)Fast response, high accuracy, high reliability high stability multi-gas detector.4)Shockproof, waterproof, anti-corrosion anti-electromagnetic interference.Main Featu...