| 摘要 |
PROBLEM TO BE SOLVED: To solve such a problem of a conventional remote controller that since each modulation system has no compatibility in principal, only a communication module of the same modulation system as that of a communication module included in the control section of an apparatus can be connected with that apparatus, and the manufacturing cost and management cost increase, because the remote controller is dedicated to each hot-water supply device, and various types of remote controller must be manufactured.SOLUTION: A communication module is constituted as a sub-circuit board 4 separate from a main circuit board 3 mounting other circuit, and the main circuit board and sub-circuit board are connected by a communication line 5, so that an arbitrary one of a plurality of types of sub-circuit boards mounting a plurality of types of communication modules, respectively, can be selected.SELECTED DRAWING: Figure 2 |
