OC-904 Portable multi gas detector for CO, O2, H2S, Ex

Portable multi gas detector description: OC-904 Portable multi gas detector which is applicable for 4 gas detection of the CO, O2, Ex, H2S, with the original imported sensor, with the safe and reliable quality. It’s with the diffusion sampling mode, can be connected with the external pump. The portable gas detector can promise the security for the personnel working under the toxic gas in the harmful environments.