Products from the USA may come with an input voltage of 110V–120V, requiring a step-down transformer. Check the device wattage to select the correct power converter.
•4.2inch E-Ink Display Module 400x300 Pixel Black,White Two-Color, with embedded controller, communicating via SPI interface,with Examples for Raspberry Pi/Jetson Nano/Arduino .Due to the advantages like ultra low power consumption, wide viewing angle, clear display without electricity. it is an ideal choice for applications such as shelf label, industrial instrument, and so on.