| 摘要 |
Electronic access control of a seldom-used outdoor security enclosure, such as a key vault, is provided by a vault lid and key system whereby the procedure for opening the enclosure occurs in two stages. One stage is a low-force stage provided by electromechanical mechanisms housed within the lid and energized by a relatively low power source. The high-force stage is provided by a human operator applying manual force to open the lid. The system is particularly adapted for security enclosures that are exposed to an outdoor environment and not operated for extended periods of time. |
