Gas Detector Controller is a cost-effective and practical gas monitoring device, mainly suitable for small and medium-sized industrial projects that require zone interlocking functions, such as small and medium-sized workshops, warehouses and production lines. It is equipped with a Chinese/English LCD display that supports two-language switching, making debugging and operation simple and convenient, and can clearly display the installation location of each device, facilitating on-site management. The device supports zone alarms and interlocks, which can quickly trigger alarm signals and interlock control when gas concentration exceeds the set value, effectively preventing safety accidents and perfectly matching the needs of small and medium-sized projects using zone interlocking controllers. It adopts XBUS 2/4 wire protocol for easy and flexible wiring, reducing on-site installation time and cost. In addition, it is compatible with HBUS protocol, which can directly upgrade existing damaged controllers without replacing the entire monitoring system, greatly reducing replacement costs. An optional wireless gateway is available for IoT transmission, realizing remote data viewing and alarm notification, providing a flexible, economical and safe monitoring solution for small and medium-sized sites with interlocking requirements.