This is an E-Ink display module, 4.2inch, 400x300 resolution, with embedded controller, communicating via SPI interface.
Due to the advantages like ultra low power consumption, wide viewing angle, great effect under sunlight, it is an ideal choice for applications such as shelf label, industrial instrument, and so on.
No backlight, keeps displaying last content for a long time even when power down.SPI interface, for connecting with controller boards like Raspberry Pi/Arduino/Nucleo, etc.
Ultra low power consumption, basically power is only required for refreshing
Comes with development resources and manual (examples for Raspberry Pi/Jetson Nano/Arduino/STM32).Onboard voltage translator, compatible with 3.3V/5V MCUs.