Warning Systems, Devices and Methods for Radiation Emitting Devices

摘要

A warning system for displaying a warning that a device unit is in use includes a sign unit configured to display warning information. A device unit includes a communication module configured to provide a wireless communication between the device unit and the sign unit such that when the device unit is activated, the communication module automatically transmits a wireless warning signal to the sign unit instructing the sign unit to display the warning information.