MOQ flexible. Bulk orders get additional discounts. OEM branding available.
4.2" flagship ESL size — the most popular for 3C retail demo units
400×300 resolution — can display product images, full specs, and pricing
4-color BWRY for high-contrast sale tags and promotional displays
2.4GHz centralized update — manage entire store from one platform
5+ year battery life — zero maintenance over display unit lifecycle
IP54 rated — reliable in high-traffic 3C retail environments
Perfect for flagship phone displays, tablets, smart home devices
| Display Technology | E-Ink (Electronic Paper) |
| Screen Size | 4.2" |
| Resolution | 400×300 pixels |
| Display Colors | Black / White / Red / Yellow (4-color) |
| Communication | 2.4GHz SDR Wireless |
| Gateway Required | Yes — CEDAR V3 AP |
| Battery Life | 5+ years (typical usage) |
| Update Speed | < 0.3s per tag |
| Operating Temperature | -10°C to +60°C |
| IP Rating | IP54 (Dust & Splash Resistant) |
| Material | ABS plastic housing |
* Specifications subject to change without notice. Contact us for the latest datasheet.
SLIM-420BWRY Electronic Shelf Label — 4.2" E-Ink electronic shelf label (ESL) featuring Black / White / Red / Yellow (4-color) 4-color display. Powered by 2.4GHz SDR (SLIM Series). CEDAR V3 AP (required). Battery life up to 5+ years. IP54 rated for dust and splash resistance. Operating temperature: -10°C to +60°C. Ideal for 3C flagship stores, electronics retail, appliance showrooms, smart home.
Tocvue ESL labels use ultra-low power E-Ink (electronic paper) technology — the same display used in Kindle e-readers. The screen only draws power when the content changes, resulting in a 5+ year battery life. No backlight needed — paper-like readability from any angle, even in direct sunlight.
The SLIM-420BWRY is available in two connectivity versions: SLIM Series (2.4GHz) requiring the CEDAR V3 AP gateway for centralized management of hundreds of tags, and BLE Series (Bluetooth 5.0) requiring no gateway — controlled directly from a smartphone app. Choose the version that best matches your store size and deployment requirements.
Factory-direct from Tocvue — professional ESL manufacturer since 2016. Contact us for wholesale pricing, sample units, and OEM customization.
The SLIM-420BWRY is a 4.2-inch 2.4GHz ESL from Tocvue, a large-format price tag for main display and promotional zones. Part of the 2.4GHz SLIM series, it uses the CEDAR V3 AP gateway for centralized management across multiple store locations. The 400×300 pixel E-Ink screen supports 4 colors (Black/White/Red/Yellow) for compelling price presentation. With 5+ years battery life, it is ideal for electronics departments, feature displays, and retail chain environments.
SLIM-420BWRY operates on the 2.4GHz SDR platform, connecting through the CEDAR V3 AP gateway for centralized price management across hundreds or thousands of tags. Ideal for chain stores and large-format retail.
4.2-inch inch E-Ink screen supports Black, White, Red, and Yellow — making regular prices and promotional offers clearly distinguishable at a glance.
Using CR2450 batteries, SLIM-420BWRY delivers over 5 years of operation with user-replaceable batteries. No need to replace the entire unit when the battery runs low.
Through the CEDAR V3 gateway and cloud platform, manage prices across all store locations from a single dashboard. Update regional pricing, run chain-wide promotions, and maintain 100% price accuracy effortlessly.
IP65-rated dust-tight and water-jet resistant housing. Cold-aisle models (SLIM-213BW-LOW) operate down to -25C for freezer and冷链 applications. Built for the demands of supermarket and hypermarket environments.
Contact us for wholesale pricing. MOQ flexible. Samples available.
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