To replace traditional paper shelf labels

it proposes a power efficient bimodal electronic shelf label system

based on the technologies of the Internet of Things and wireless sensor networks. Focusing on the power efficiency

the proposed electronic shelf label adopts an electrophoretic electronic paper display and a Bluetooth module as the display and communication modules respectively. Moreover

this label has two working states: wake-up state and sleep state

enabling it to switch the working state under the server commands

to report label status

and to update display contents with low power consumption. The experimental results show that this system can meet the basic requirements of application scenarios. It has an advantage of comparatively low running costs over traditional paper labels.