Waveshare Passive NFC-Powered E-Paper 4.2inch No Battery Wireless Powering Data Transfer Suitable for Price Tags/Shelf Labels

This is an NFC-powered 4.2inch e-Paper Module, with 400 x 300 resolution. Users can transmit data from a smartphone or NFC reader to e-Paper and refresh it by NFC.
No backlight required, e-Paper can keep displaying the last content for a long time without power. The displayed content can be customized and controlled by the user at any time through the smartphone, which is convenient and flexible.
It does not contain a power supply such as a battery, You can modify the display content by smartphone, suitable for applications where power is limited. Suitable as equipment labels, shelf labels, information storage, etc.
Equipped with ABS plastic shell with good strength and toughness. Provide a supporting Android APP to help users edit and manage the display content of the ink screen.
Provide online user manual. Note: Because the communicating distance of NFC is short, to make the updating successful, please do not move the device when updating.