| 摘要 |
The invention relates to an electronic shelf label and an electronic labelling system including an electronic shelf label, the label comprising a display for displaying information related to a product, a receiver for receiving commands and/or data from a central unit, a control unit for controlling the display and the receiver, characterized in that a timer is provided for measuring the time passed since the last message was received from the central unit, a comparing unit is arranged for comparing the measured time to a predetermined threshold time, and a controller is adapted to initiate a predetermined action if the measured time exceeds the threshold time. The invention also relates to an electronic labelling system comprising such an electronic shelf label.
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