{"product_id":"waveshare-4-2-inch-e-ink-display-for-everyday-shelf-signage","title":"Waveshare 4.2 Inch E-Ink Display for Everyday Shelf Signage","description":"\u003cdiv\u003e\n\u003cp\u003eThe Waveshare 4.2 inch E-Ink display offers a clear, energy-efficient option for static visual applications. With a 400x300 resolution and embedded controller, it uses an SPI interface for easy integration.\u003c\/p\u003e \u003cp\u003eIn retail settings, this display serves as an effective shelf label, showing product details without constant power draw. It maintains visibility even when powered off, making it practical for low-maintenance environments like stores or industrial panels.\u003c\/p\u003e \u003cul\u003e \u003cli\u003eNo backlight required, allowing images to persist without electricity for extended periods\u003c\/li\u003e \u003cli\u003eUltra-low power use, ideal for battery-operated devices with power needed only for updates\u003c\/li\u003e \u003cli\u003eSPI interface ensures compatibility with boards like Raspberry Pi, Arduino, and similar microcontrollers\u003c\/li\u003e \u003cli\u003eOnboard voltage translator supports 3.3V or 5V systems for versatile connectivity\u003c\/li\u003e \u003cli\u003eIncludes basic development resources, such as example code for common platforms\u003c\/li\u003e \u003cli\u003eCompact design with a viewing angle over 170 degrees for wide readability\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eKey specs include a display size of 84.8mm x 63.6mm and typical refresh time of 4 seconds. This module fits well for developers and makers seeking reliable, low-power display solutions for signage or instrumentation projects.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Syndmart","offers":[{"title":"Default Title","offer_id":47271547830490,"sku":"ZY15802278","price":60.07,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0712\/7062\/9594\/files\/ZY15802278.jpg?v=1774425905","url":"https:\/\/syndmart.com\/products\/waveshare-4-2-inch-e-ink-display-for-everyday-shelf-signage","provider":"Syndmart","version":"1.0","type":"link"}