Wall-mounted hazardous gas audible and visual alarm

The utility model discloses a wall-mounted dangerous gas audible and visual alarm which comprises a control box, a control module is installed in the control box, the control module is externally connected with an electromagnetic valve, an exhaust fan and a plurality of gas detectors, the control module is further provided with a remote communication module, the front face of the control box is provided with a display screen, and the front face of the control box is provided with a wireless communication module. A display screen is arranged on the control box, a maintenance door is arranged at the bottom of the display screen, an alarm lamp is arranged above the control box, a buzzer is arranged on the right side of the alarm lamp, detachable ventilation plates are arranged on the two sides of the control box, ventilation filter screens are arranged on the ventilation plates, and the ventilation plates are of structures convenient to disassemble. The ventilation hole and the filter screen can be replaced and