Electronic Shelf Labels (ESL) are digital display tags mounted on retail shelves to replace conventional paper price labels. Powered by batteries and connected wirelessly to a management system, ESLs remotely display and update product prices, promotions, QR codes, specifications and inventory data automatically. Featuring low power consumption, clear visibility and flexible content editing, they realize centralized digital price management for offline stores. Widely adopted in supermarkets, convenience stores, pharmacies, fashion boutiques, electronics retail and smart warehouses.