| 摘要 |
PROBLEM TO BE SOLVED: To prevent an electric valve from being opened in a non-fire state by being touched with the object or the hand. SOLUTION: In the sprinkler control panel for opening/closing the electric valve provided on the proximal end side of secondary side piping to which a sprinkler head is connected, an operation switch for opening or closing the electric valve is provided. The operation switch does not open or close the electric valve unless it is pressed for the predetermined time, 3 seconds or more for instance. When the operation time of the switch is short, a voice alarm indicating that it is to be corrected operated is outputted. COPYRIGHT: (C)2011,JPO&INPIT
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