CRADLE, SECURITY SYSTEM, TELEPHONE, AND MONITORING METHOD

A cradle includes: a telephone supporting section supporting a mobile telephone; a connecting section electrically connecting to the mobile telephone; a sensor communications section receiving a report from a sensor sensing a state of a monitored area; and a transmission instructing section providing an instruction signal to the mobile telephone via the connecting section to cause the mobile telephone to transmit a content of the report from the sensor to a management center.