Fire audible and visual alarm

The utility model discloses a fire audible and visual alarm, which is characterized in that a PCB (printed circuit board) and a loudspeaker adopt an integrated structure and are positioned and mountedas a whole, so that the limiting firmness degree and the internal space utilization rate are improved; various clamping, embedding, plugging and unplugging type positioning structures are arranged; wherein the loudspeaker, the positioning ring, the positioning column, the notch, the pressing hook, the PCB end corner, the caulking groove, the caulking column, the inserting bolt, the bolt groove, the longitudinal inserting piece, the longitudinal inserting groove, the transverse inserting piece, the transverse inserting groove, the clamping piece, the clamping hook, the straight inserting hook,the straight inserting groove and the like are matched with one another, so that the upper cover, the loudspeaker, the PCB, the middle base and the bottom cover are tightly fixed; novel overall design, the structure is compac