Patent ID: 8620485
Filing Date: 2013-12-31
Classification: G07C

Abstract:
1. An electronic tag for displaying a maintenance state of an associated electrically-powered device, the tag comprising: data storage storing data indicative of the maintenance state, the data comprising information defining an expiry date for the maintenance state; a data processing unit that, in use, monitors a remaining duration to the expiry date; a display that displays information indicative of the maintenance state; and a cut-out unit that controllably enables and disables transmission of electrical power to the associated electrically powered device dependent on the remaining duration; wherein the cut-out unit enables transmission of electrical power if the remaining duration exceeds a specified threshold and the cut-out unit disables transmission of electrical power to the associated device if the remaining duration is less than the specified threshold; and an output activated by a control signal emitted if the remaining duration is in a specified range so as to indicate that the expiry date is approaching.