Fire alarm controller convenient to maintain

The utility model discloses a fire alarm controller convenient to maintain, which comprises a fire alarm controller body and a quick dismounting mechanism, an external signal module is arranged in the fire alarm controller body, a plurality of wiring ports are arranged on the side wall of the external signal module, and the wiring ports are connected with the quick dismounting mechanism. A wiring port is formed in the external signal module, a groove is formed in the external signal module right above the wiring port, a pressing plate is slidably connected to the inner wall of the wiring port, a threaded rod is rotatably connected to the upper end of the pressing plate, and the upper end of the threaded rod penetrates through the bottom of the groove and is fixedly connected with a rotating block. According to the utility model, the spring is utilized to push the first bevel gear on the rotating shaft to be separated from the second bevel gear, the influence on the fixation of a single wiring port on a wire d