| 摘要 |
<p>A key reminder device for use in combination with a key lock mechanism (24) having an adjustable timer (t1) with a predetermined timer interval electrically coupled to a replaced power supply (B1). The timer (t1) is energized upon detection of a conventional key (32) inserted into the key lock mechanism (24). Should the key remain in the key lock mechanism beyond a predetermined time, the timer will activate an audible alarm (a1) to remind the owner of the keys to remove them. Should the timer be set at a low level, the device operates to indicate the presence of a key. When used in combination with a visual indicator, the key reminder provides an indicator of door entry to the hearing impaired.</p> |
