| 摘要 |
A key reminder device for use in combination with a key lock mechanism (24) having an adjustable timer (45) with a predetermined timer interval electrically coupled to a replaced power supply (42). The timer (45) is energized upon detection of a conventional key (32) inserted into the lock key mechanism (24). Should the key (32) remain in the key lock mechanism (24) beyond a predetermined time, the timer (45) will activate an audible alarm (44) to remind the owner of the keys to remove them. Should the timer (45) be set at a low level, the device operates to indicate the presence of a key (32). When used in combination with a visual indicator, the key reminder provides an indicator of door entry to the hearing impaired.
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