Alarm device

The utility model provides an alarm device. The alarm device comprises a base located in a production environment; the connecting part is used for being detachably fixed on the base; and the PCB comprises a sensor, the PCB is installed on the connecting component, and the sensor is used for detecting environmental data in the coal mine. The connecting part is arranged in the alarm device and is detachable, the connecting part comprising the PCB is directly installed on the base during installation, the connecting part comprising the PCB is directly taken down during disassembly, the whole alarm device does not need to be pulled out, and only the base is installed in a coal mine all the time. The sensor is arranged on the PCB, wires and cables for connecting various devices do not need to be combed, the sensor is directly arranged on the PCB, the PCB is arranged on the connecting component, the PCB can be directly taken down along with the connecting component during disassembly, and the difficulty of disassem