| 摘要 |
<p>Radio waves or electromagnetic waves radiated from a mobile telephone or a mobile computer may cause malfunction of a general precision electronic device. A device is provided for warning of the invasion or generation of the wave. The device has an effective warning function of not giving false warning by measuring and storing the electromagnetic wave environment at the initial stage when it is installed, and by allowing the user to set the optimum warning sensitivity suited for the environment for every frequency band. When a harmful electronic wave is detected, the device automatically warns the emitter to stop the emission through an announcement, and displays the rough direction, location and intensity of the source of the emission and the type of device of the source inferred by a learning function.</p> |
