| 摘要 |
PROBLEM TO BE SOLVED: To provide a theft alarm device with improvements in convenience and user friendliness.SOLUTION: A theft alarm device 1 includes: alarm means for issuing an alarm in a case where a reference period of time has elapsed since a voltage of a power source of a vehicle reaches a predetermined voltage or less; and failure display means to display a failure of the power source at turning on an ignition of the vehicle in a case where a period of time from when the power source reaches the predetermined voltage or less to when the power source exceeds the predetermined voltage is shorter than a predetermined period that is shorter than the reference period. |
