| 摘要 |
PROBLEM TO BE SOLVED: To enable enhancement of usability associated with an alarm caused by detection of occurrence of abnormality of a sensor device.SOLUTION: A portable cellular phone terminal 3 that has a portable cellular phone function for telephone-calling through a cellular phone network of a cellular phone business operator and a radio communication function of performing radio communication through no cellular phone network is provided with a radio I/F part 15 for interfacing a master unit 1 and the radio communication function of the portable cellular phone terminal 3. Occurrence of abnormality detected by sensor devices 5, 6 is notified to the portable cellular phone 3 through the radio I/F part 15. When the occurrence of abnormality is notified, the portable cellular phone 3 falls into an alarm state. Therefore, even when no contract is made to a subscriber telephone line, an alarm message can be displayed on not only the master unit 1, but also the portable cellular phone 3. Therefore, usability on the alarm caused by detection of occurrence of abnormality of the sensor devices 5, 6 can be enhanced. |
