MONITORING SYSTEM

摘要

A monitoring system includes a sensor, a monitoring camera, a power control apparatus, a master device that is connected to a fixed telephone network so as to perform calls to other fixed telephones, and a mobile phone terminal that is connected to other mobile phones via a mobile phone network. When an abnormality is detected, the sensor, the monitoring camera, or the power control apparatus transmits an abnormality detection signal to the master device. When the abnormality detection signal is received, the master device converts at least a part of the abnormality detection signal so as to generate notification information, and transmits the notification information to the mobile phone terminal. The mobile phone terminal displays a warning screen based on the notification information on the display unit.