Recognition award, personnel identification holder and/or personnel unit for attachment to hardhats, protective helmets or the like

摘要

A signal device is provided for identifying and communicating a location or hazard, concealed within a housing on a hard hat having a pocket. Further provided is a detachable housing to be placed in the pocket. Embodiments incorporate a speaker for audible identification, a light emitting diode (LED) for visual identification and a global positioning sensor (GPS) for identifying the wearer's location and various circuits and systems that utilize the invention.