首页>
外国专利>
Method of activating a supplemental visual warning signal based on frequency emitted from a generator of a primary audible warning signal
Method of activating a supplemental visual warning signal based on frequency emitted from a generator of a primary audible warning signal
展开▼
机译:基于从主要听觉警告信号的发生器发出的频率来激活补充视觉警告信号的方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
A system and method for signaling users including a control device electrically connected to a transceiver. The transceiver has a specified frequency. A first mobile signal device being activated by a first user and electrically communicating with a first transmitter having a selectable signal frequency. The first transmitter electrically communicates with the transceiver using the specified frequency. A second signal device includes a second receiver for receiving an activation signal from the transceiver. The second receiver electrically communicates with the transceiver using the specified frequency. The second signal device is activated by the activation of the first mobile signal device using the transceiver for alerting other persons.
展开▼