4.2 Inch 400×300 Dot Matrix E-Ink ESL Module PE42R_V4_BLE BWR 2.4G BLE Wireless

4.2 inch Black White Red 3-color large-size E-Paper ESL tag model YE0420J3-P1 with part number PE42R_V4_BLE, 400*300 high resolution, 2.4G BLE Bluetooth wireless communication, ultra-long 3-5 years standby service life, 180° full ultra-wide viewing angle. Perfect for hypermarkets, fresh food supermarkets, wholesale warehouses and boutique retail digital price display. It supports text, picture, QR code & barcode editing via smartphone and cloud server, equipped with 4 types of flexible mounting brackets for multiple retail installation scenarios.

YE0420J3-P1 large format BLE electronic shelf label adopts low-power electrophoretic e-ink display with black-white-red three-color rendering, internal model PE42R_V4_BLE. It uses 2.4G Bluetooth BLE wireless connection with stable 10-meter communication radius, supports cloud-based template design and OTA wireless firmware remote upgrade. Built-in four CR2450 batteries reach total 2400mAh capacity, realizing 3-5 years long-term standby without frequent battery replacement. Compatible with Android phones, iPhones and tablet PCs, users can freely customize display templates online. Matching desktop stand, 3M adhesive bracket, swivel universal clip and magnetic base are available, widely used in large retail chain unified digital price management system.

• 4.2 inch large-format black-white-red three-color e-paper screen with high-definition 400*300 pixel resolution
• 180° full ultra-wide viewing angle, clear screen content visible from all horizontal and vertical directions
• Ultra-low power e-ink technology, 2400mAh large capacity battery composed of 4 CR2450 cells, 3-5 years long standby cycle
• 2.4G BLE Bluetooth wireless data transmission, stable 10m signal coverage for large retail shelf layout
• Cloud template editing function, edit commodity price, promotion text and QR code via mobile phone then sync wirelessly to ESL tags
• OTA remote wireless firmware upgrade, convenient batch maintenance and version update for thousands of store labels
• Fully compatible with iOS and Android mobile devices, one-click scan pairing to read and write screen display data
• 4 exclusive matching installation brackets for counter display, wall mounting, flexible hanging and magnetic adsorption scenarios
• 104.4g moderate weight, 104.5*87.5mm extra large display area to load rich product promotion information
• Multi-format content display support: commodity text, advertising pictures, QR codes and barcodes for customer self-inquiry
• 0~50℃ stable operating temperature, adapt to hypermarket, fresh market, pharmacy and general retail indoor environment
• One-stop batch price update solution, drastically cut labor cost of manually replacing paper price tags daily

• Hypermarket, wholesale grocery, fresh meat & seafood supermarket large digital price tag system
• Chain pharmacy, high-end cosmetics boutique, luxury clothing retail shelf electronic information labels
• Large warehouse inventory management, goods classification location marking and product price identification tags
• Liquor store, electronics mall, furniture shop big-size promotional discount price display boards
• Self-service retail shopping area with QR code scanning to view product origin and ingredient details
• National retail chain unified cloud price management, synchronous wireless update all store shelf price data
• Shopping mall premium specialty shops, deli, bakery counter desktop large-size advertising price screens
• Factory raw material warehouse, logistics sorting center low-power long-term static goods identification labels

 Physical Product Picture

Physical Product Picture

Optional Mount Accessory: Desktop Display Stand

Optional Mount Accessory: 3M Double-sided Adhesive Bracket

Optional Mount Accessory: Flexible Swivel Universal Hanging Clip

Optional Mount Accessory: Double Magnet Adsorption Base

Complete Full-Series ESL Supply: We produce full range electronic shelf labels including 1.54", 2.13", 2.9", 4.2" BLE e-ink tags, matched mounting brackets, cloud management software and supporting display hardware like OLED, TFT LCD, E-Paper modules for retail & industrial intelligent transformation projects.

Factory Direct Competitive Price: Original manufacturer without intermediate distributors, support small sample testing orders and large chain supermarket bulk orders with flexible tiered discount policies.

Strict Full-Function Pre-Shipment QC: Every 4.2-inch large ESL undergoes complete testing: screen color uniformity, BLE communication stability, battery discharge test, QR/barcode display verification and firmware upgrade compatibility inspection before packaging and delivery.

Dedicated Retail System Solution Team: Our professional engineers provide full one-stop service including custom template design, cloud system docking, matching bracket selection and long-term technical guidance for supermarket and chain store digital pricing upgrade projects.