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4.2 inch Waterproof B/W/R ESL
The 4.2-inch Black/White/Red E-paper Electronic Shelf Label (ESL) is a large-format digital label ideal for displaying rich content in retail, logistics, and industrial environments. Powered by E-ink tri-color technology, it shows black, white, and red visuals with high contrast and ultra-low power usage, delivering excellent visibility even in bright lighting conditions.
Key Features:

Tri-Color E-paper Display: Supports black, white, and red content — perfect for drawing attention to discounts, warnings, or featured items.

Large Display Area: The 4.2-inch screen offers ample space for text, barcodes, logos, and QR codes, making it suitable for high-value products or shelf-end displays.

Ultra-Low Power: Only consumes energy during screen updates, allowing operation for 10 years on a single battery.

Superior Readability: Mimics traditional paper for clear viewing under sunlight or indoor lighting, with a wide viewing angle >170°.

Wireless Connectivity: Compatible with 2.4GHz RF, BLE, or NFC for real-time updates via gateway or handheld terminals.

Applications:

Retail & Supermarkets: Large product pricing, promotional signage, product category labels

Warehouse & Logistics: Box/pallet labeling, inventory status indicators

Smart Facilities: Meeting room displays, equipment status signs

Healthcare & Industry: Patient labels, maintenance tags, safety warnings

Specification

Product Dimensions (mm)

99.16 x 89.16 x 12.3

Case Color

Black, White

Display Color

Black/White/Red

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

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