| 摘要 |
<p>PROBLEM TO BE SOLVED: To easily display a desired function on the display part of a disaster- preventive receiver with good operability and to speedily and concretely recognize event occurrence. SOLUTION: The disaster-preventive receiver 10 which is equipped with the display part 30 having a screen 31 for displaying various functions in a disaster-preventive system 1 and implements a specific function in response to operation for the specific function displayed on the screen 31 is so constituted that related functions are in hierarchical structure and the screen 31 can displays the functions in the hierarchical structure. On the screen 31, page turning-over switches 32 and 32 and a screen erasing means A8 are provided. An alarm screen can be displayed with a tab button T1. Further, in the case of fire or gas leak, the screen is automatically switched to the alarm screen.</p> |
