ALARM

PROBLEM TO BE SOLVED: To provide an alarm that can suppress inconvenience such as accumulation of liquid water generated inside a body.SOLUTION: An alarm 1 includes a frame-shaped packing sandwiched by a fitting region of a lower case 3 that fixes a substrate mounted with electronic parts and an upper case 4 that forms a body fitted to the lower case 3. Further, a non-woven cloth 6 arranged in such a manner as to cover a vent hole 44 of a second case 4 is arranged to be sandwiched between the surface of the upper case 4 and a display plate 7. The upper case 4 includes a drain groove 45 that discharges the liquid water generated inside the body to the outside of the body.