| 摘要 |
<p>An earthquake alarm includes a horizontal base (14). A bracket (1) having three dragonesque columns and whose height is adjustable is installed on said base (14) through some leveling docking wires (5). The said bracket (1) has a flashing alarm lamp (3). The lower portion of the bracket (10) is connected to a low mass center pendulum (7) through an upper suspension stringing part (2) and a lower suspension stringing part. The said base (14) has a digital integrate circuit plate (15) and a power supply (16) which are connected to the said alarm lamp (3) circuit.</p> |
