The detector is also compatible with catalytic, infrared, semiconductor, electrochemical and other gas sensors. The shell is made of thickened explosion-proof aluminum alloy shell to ensure long-term stable work in various industrial explosion-proof environments. All-in-one detector can switch 2/3/4 wire system, RS485 and LORA communication by replacing the plug-in module. The detector comes with one switch output (passive relay output), the output can be adjusted by parameter setting to set the following mode, and the detector comes with one sound and light alarm (24DC) drive output.