| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a receiver in which display line connection or non-connection is registered in advance to respective input terminals, and which monitors an input terminal L to which display line connection is registered for performing fire display and disconnection display, capable of preventing a registration error of the display line non-connection about the input terminal to which an existing display line is connected, during renewal.SOLUTION: A receiver 10 comprises an operation key 13 for receiving registration operation of display line connection or non-connection about a desired input terminal L, and monitors all input terminals L, and when detecting a display signal on the input terminal L to which the display line non-connection is registered, performs fire display and registers the display line connection to the terminal again automatically.</p> |
