| 摘要 |
PURPOSE:To attain the automatic restoration again to alarm display after a prescribed time elapses and to confirm the content of a memory by intermitting the alarm display for a prescribed time and display display information instead when a display information confirmation request comes at the alarm display by a low voltage alarm means. CONSTITUTION:A transmission signal is subject to demodulation processing by a radio section 2 via an antenna 1, the signal is collated with the content of a storage section 3 storing a number specific to a receiver and when they are coincident, a coincidence signal is outputted to a control section 5 and a display information signal is outputted successively to the control section 5. The control section 5 stores the content of the sent display information signal into the storage section 6 and displays it on a display device 8 via a display drive circuit 7. The voltage drop of a battery 9a is detected by a low voltage detection circuit and the alarm display of a low voltage is displayed on the display device 8. Thus, in operating a switch 11 at the alarm display, the control section 5 references the content of the memory 6, displays the display information for a prescribed time decided by a timer 10 and displays again the alarm display information. |
