| 摘要 |
PROBLEM TO BE SOLVED: To provide a fire detector for enabling a fire receiver to detect disconnection without providing a terminating resistance. SOLUTION: The fire detector comprises a fire detecting part for outputting an analog signal detected by a sensor; a fire discrimination part for discriminating a fire when a detection value obtained by performing A/D conversion of the analog signal exceeds a threshold; a first current adjustment circuit for maintaining current consumption at a first specified current value from the feeding of the power until a CPU composing the fire discrimination part is started; and a second current adjustment circuit for maintaining current consumption at a second specified current value after the fire detection part is started, wherein the first and second specified current values are current values which are equal to or more than a disconnection detection threshold of the receiving part. COPYRIGHT: (C)2009,JPO&INPIT
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