| 摘要 |
PROBLEM TO BE SOLVED: To provide a wireless communication system capable of swiftly notifying an occurrence of problem while reducing burden on a user.SOLUTION: Each control section 1 of fire alarm devices TR performs a 24-hour measurement. When any problem is found in a self-diagnosis or a regular monitoring within a range of several hours (for example, 5-6 hours) including a point when the 24-hour measurement is completed, the control section 1 causes a notification section 5 to issue a notification at an ordinary volume. On the other hand, out of the range, the control section 1 causes the notification section 5 to issue a notification at a volume smaller than the ordinary volume. In the former hours, users (dwellers) are possibly still awakening, while in the later hours, users (dwellers) are possibly sleeping. Therefore, the wireless communication system can swiftly issue a notification of occurrence of problem while reducing burden (unpleasantness due to being awaken by a large sound etc.) on the users. |
