#$%^&*AU2011203307B220130822.pdf#####ABSTRACT To provide a sounder that outputs a predetermined alarm to notify an abnormality in a monitored region, and includes an output device-side connection terminal on a surface facing a predetermined installation surface, to 5 structurally and electrically connect the sounder to a base-side connection terminal provided on a predetermined fitting base fixed to the installation surface. One of the base-side connection terminal and the output device-side connection terminal is configured using plural plates disposed in approximately parallel on the installation surface, and the other is configured using a plate 10 sandwiched by the plural plates. 28[FIG. 2] 13 13 28 30 3 0
