| 摘要 |
The device having a security function for detecting fire, thief or gas leakage and a monitor function for monitoring electricity or water usage provides the monitored information to a management center (C) after reporting the security status of the home performed regularly. An information board (2) comprises I/O circuits (200,400) , a CPU (300), a RAM for storing the setting value of the gas meter, and a ROM for storing the control sequence of the system.
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