OC-901 Portable multi gas detector with inner pump

OC-904 Portable multi gas detector

OC-840 Portable multi gas detector for CO, O2, H2S, Ex with diffusion type

OC-1000 CO2+NH3 mulit gas decector with pump-suction sampling

OC-904A Portable Hydrogen Cyanide HCN Gas Detector

OC-903 Portable Multi Gas Detector For NH3, H2S And LEL

OC-903 Portable Multi Gas Leak Detector For CO2 And O2

OC-1000 Portable Multi Gas Detector For NH3/H2S/LEL

OC-1000 Portable Multi Gas Detector For NH3 And CO2

OC-904A Portable Arsenic Hydride AsH3 Gas Detector

OC-904A Portable Ammonia NH3 Gas Detector

OC-904 Portable multi gas detector for NH3, H2S and LEL with rechargeable battery