While traditional paper price tags and static shelf advertising have update cycles of 3-7 days, the electronic price tag linkage system is leveraging data exchange to create a real-time, resonant marketing matrix between LED displays and shelf advertising. After implementing this system, a supermarket chain saw a 41% increase in shelf traffic for promotional items and a 20-fold improvement in price tag update efficiency.

System Architecture and Linkage Logic

Hardware Interconnection Foundation: Using a Bluetooth 5.0 + 2.4G dual-mode communication module, electronic price tags and store LED displays are connected to a unified gateway. A 2.4G private network deployed in a convenience store enables millisecond-level data synchronization between 300 price tags and three LED displays within a 50-meter radius, ensuring zero-delay synchronization between price tag adjustments and on-screen promotional information. Data-triggered mechanism: When electronic price tags detect price changes (such as a limited-time discount), they automatically send instructions to the LED screen: ① A dynamic promotion pop-up window appears in the corresponding area of the screen. For example, when a price tag in the snack section drops by 15%, the upper LED screen immediately plays an animated special effect that reads "Only for 3 hours." ② The product carousel on the screen is simultaneously updated, placing the price-adjusted items at the top of the display. This led one daily necessities store to increase exposure for its promotional products by 280%.

Intelligent Linkage Scenario Analysis

Dynamic Price Show Mode: In the fresh produce section, electronic price tags automatically adjust prices based on the freshness of the product (for example, vegetables drop 5% every hour in the evening). The LED screen simultaneously generates a dynamic "Freshness Countdown" poster. Using this mode, one supermarket increased evening vegetable sales by 63%. The color linkage between the price tags and the screen is also effective—when the price tag displays a red discount number, the edge of the LED screen flashes red, enhancing the visual impact. A closed-loop cross-screen shopping guide system: When customers scan the QR code on an electronic price tag to access the mini-program, the LED screen pushes customized content based on their browsing history. For example, after a customer viewed a pair of jeans on a clothing store price tag, the LED screen above immediately played a video promoting "80% off a matching T-shirt," guiding them to a subsequent purchase. This process increased their average order value by 17 yuan.

Quantifying Operational Value

From a cost perspective, the electronic price tag linkage system has saved a department store 120,000 yuan in annual paper material costs and reduced labor costs for price tag replacement by 85%. From an efficiency perspective, the promotional information update cycle has been shortened from days to seconds, enabling a boutique supermarket to seamlessly switch promotional strategies across morning, noon, and evening hours. More importantly, the marketing synergy created by data linkage has transformed shelf advertising from passive display to active promotion. Using this system, a 3C retailer has increased the conversion rate of slow-selling models by 52%. In the digital transformation of retail, the integration of electronic price tags and LED displays is no longer just a matter of technological integration; it's a key path for transforming shelf space into intelligent marketing touchpoints. When the pulsing numbers on price tags and the dynamic images on screens create a consumer magnetism, offline retail's contextual marketing is ushering in a new growth paradigm.