| 摘要 |
PURPOSE:To allow other housing to identify easily mis-information in case of mulfunction and to allow a housing informing abnormity to recognize the confirmation of information by other housings by providing a confirming means sending a confirming signal and a restoration means sending a restoration signal to each of terminal equipments. CONSTITUTION:A terminal unit is provided with a confirming switch 10 operated for alarm display while receiving an informing signal from other terminal equipment, a switch signal of the confirming switch 10 is given to a confirming signal generator 11, an address of the informing terminal equipment is designated and the confirming signal is outputted to a transmission interface 7. When the confirming signal from other terminal equipment is received, a housing applying confirmation operation is displayed. Further, the terminal unit is provided with a restoration switch 12, an information display state is cleared by operating the restoration switch 12 at malfunction and the restoration signal is sent to other terminal equipment at the information from itself. Moreover, when the restoration signal is received after the informing signal from other terminal unit is received, the abnormity display is released based on the reception of the restoration signal and a mis-information display light 23 is lighted.
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