The DN-8000 gas alarm controller is suitable for measurement and control of various standard 4~20 mA signal, RS-485 signal and TCP/IP network port devices. Its electronic circuits use advanced high-precision single-chip microcontroller processing technology, making the whole unit stable in operation, highly accurate in measurement and highly versatile. The system uses the Android operating system with a user-friendly operating interface and powerful system functions; by operating the system menu via the touch screen, the main patrol display shows gas detector measured values, alarm information, fault information, inhibit information, stored information, device zone information and more.