| 摘要 |
The invention relates to a system and method of using a remotely electronically-activated visual, auditory, or transmitted signal to alert persons within close proximity to the visual signal of an emergency situation. In an embodiment of the method of this invention, a visual signal is placed in a location within a structure facing a public area outside of the structure. To operate this system, a person activates an activation mechanism, such as by pushing a button, on a remote transmitter. The remote transmitter then sends an electromagnetic signal, preferably a radio signal, to the receiving antenna of a wireless signal receiver. Upon receiving the electromagnetic signal, the receiving antenna activates a switch that sends electric power from a power source to the visual signal. The electric power activates a light source inside of the visual signal, which lights up a warning message. The visual signal may further comprise an auditory signal, or, by interfacing with a communications system, the visual system may comprise a transmitted signal that relays information about the emergency.
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