| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a system for performing communication tests on all alarms with simple operation. Ž<P>SOLUTION: A slave radio device 2 transmits a reply signal including identification information assigned in advance upon receiving a test instruction signal transmitted from a master radio device 1. The master radio device 1 transmits the test instruction signal when receiving a test operation in an operating part 14. Afterwards, until the lapse of a predetermined time, the master radio device investigates the presence of a slave radio device 2 that has not transmitted a reply signal and outputs notification by specifying the slave radio device 2 as a transmission source based on the identification information upon receiving the reply signal. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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