Fixed Type Freon, Flammable, Oxygen & Toxic MULTI Gas Detector Model : GTM-2000 Gas : CH4, CO, COS, H2 & etc Comm. : 4-20mA, RS-485, Relay, PoE App. : CE, KC Fixed Type Freon, Flammable MULTI Gas Detector Model : GTM-1000 Gas : C4F6, CH2F2, CH3F, C5F8, C4F8 & etc Comm. : 4-20mA, RS-485, Relay, PoE App. : KC, CE
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