| 摘要 |
<p>The present invention relates to an electronic shelf label comprising a first unit (54); (61) configured to present information, said first unit is provided with control electronics (53); (64), and a communication interface through which the control electronics may communicate with an externally arranged central unit (47). The first unit (54); (61) is provided with means (57); (63) to connect an additional unit (55); (62) and configured to supply power to said additional unit (55); (62) when connected.</p> |
