The 4.2-inch Black/White/Red/Yellow Electronic Shelf Label (ESL) is a mid-to-large size smart display designed to deliver color-rich, high-contrast digital content for retail, warehouse, and smart signage environments. Featuring quad-color E Ink technology, it supports black, white, red, and yellow, allowing more dynamic, visually engaging labeling and signage with minimal power consumption.
Key Features:
Quad-Color E-paper Technology: Displays black, white, red, and yellow, ideal for highlighting pricing, promotions, product status, and warnings with intuitive color coding.
Ample Display Space: The 4.2-inch screen allows for detailed product info, barcodes, QR codes, and branding on a single label, suitable for larger shelving and products.
Ultra-Low Power Consumption: Consumes power only during content updates, ensuring multi-year operation on a single battery.
Superior Readability: Offers paper-like clarity, wide viewing angles (>170°), and sunlight readability — perfect for bright retail or industrial lighting.
Wireless Connectivity: Supports 2.4GHz RF, BLE, or NFC for remote content updates via a centralized ESL system or handheld device.
Applications:
Retail & Supermarkets: Category labels, dynamic price displays, promotion boards
Warehousing & Logistics: Location labels, status indicators, pick/pack displays
Smart Industry: Equipment labels, production data displays, safety signage
Healthcare & Public Spaces: Patient room tags, instructions, alert indicators
Product Dimensions (mm) | 99.16 x 89.16 x 12.3 |
Case Color | Black, White |
Display Color | Black/White/Red/Yellow |
Display Area (mm) | 84.8 x 63.6 |
Display Resolution (Pixel) | 400 x 300 |
DPI | 119 |
NFC | Support (Optional) |
Multiple Pages | Support 8 pages |
LED | Red, Green, Blue, three primary colors, Support 7 colors |
Operating Temperature | 0°- 40°C |
Ambient Humidity | 45% - 70%RH |
Battery Type | Button Battery |
Battery Life | >10 years |
Waterproofing Level | IP54 |
Certification | CE, RoHS, FCC, MIC |
Communication Frequency Band | 2.400-2.480 GHz, Maximum EIRP ≤ 10mW |
