| 摘要 |
PROBLEM TO BE SOLVED: To solve problems for example, fire alarm devices for dwelling for detecting fire disaster and outputting an alarm often use a battery as a power source, and the fire alarm devices using the battery generally comprise a voltage monitor function for monitoring voltage of the battery for every predetermined time, and output an alarm when the voltage of the battery lowers to a predetermined value, and output an alarm of battery abnormality, and in the fire alarm devices, there are some recording a history of occurrence of battery abnormality, but it is impossible to find in which of steps battery abnormality has occurred, based on the history.SOLUTION: A fire alarm device 10 comprises: a battery 11; and a battery monitor part 13 for monitoring the battery 11. The fire alarm device further comprises: a temperature measurement part 14 for measuring temperature; and a recording part 16 for recording battery voltage which is measured by the battery monitor part 13, and temperature which is measured by the temperature measurement part 14 for every predetermined time.SELECTED DRAWING: Figure 1 |
