Abstract: An advertising beacon configured to inductively couple to a power and control system which may include various retail electronic devices such as electronic shelf labels, video monitor displays, out of stock or inventory control sensors, promotional glass displays, and the like. The advertising beacon wirelessly broadcasts content, such as a web address or a programmed computer code associated with a web address, to smart devices which are able to retrieve coupons, advertisements, product information and the like from the web address. The advertising beacon operates in conjunction with other electrical devices of the power and control system to aid a customer's product selection and to aid store personnel's inventory and information management.

Abstract: A double hearing protection system comprises a circumaural hearing protector that covers and encircles the pinnae and an earplug device that is inserted into the ear canal. The earplug portion of the system comprises a tether that is coupled to the interior of a circumaural hearing protector. The tether retracts into the earcup when both the earplug and circumaural hearing protector are worn, ensuring that the earseal against the head is not broken by the retractable tether.

Abstract: A double hearing protection system is disclosed. The earplug portion of the system contains a tether attachment mechanism that may be selectively attached to the interior of a circumaural hearing protector designed with the mating attachment. The tether retracts into the earcup when both the earplug and circumaural hearing protector are worn, ensuring that the earseal against the head is not broken by the retractable tether. The attachment point inside the ear cup mates to the end of the tether in a way that prevents foreign object damage in dangerous work environments, and limits the vibratory path from the earcup to the earplug through a flexible attachment mechanism. The benefit of both the earplug and earcup combined offers the double passive hearing protection for extreme noise environments while providing for a convenient means by which to achieve the double hearing protection and not compromise its performance through the attachment mechanism.