| 摘要 |
PROBLEM TO BE SOLVED: To provide a fire alarm receiver having a so-called backup function for performing a fire alarm such as a display and sound even when abnormality is caused in a storage means required for driving a control means in a main unit. SOLUTION: The control means 10 is normally connected to a main storage means 15, and when abnormality is caused in the main storage means 15, a switching means 16 is driven and the control means 10 is disconnected from the main storage means 15 and connected to a sub-storage means 14. COPYRIGHT: (C)2004,JPO
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