4.2" flagship BLE ESL — no gateway, lowest deployment cost for 3C retail
Smartphone app management — instant updates, no infrastructure needed
400×300 resolution — can display product images, specs, and pricing
4-color BWRY for bold promotional displays and flash sale tags
5+ year battery — zero maintenance for flagship demo units
IP54 rated — reliable in high-traffic 3C retail environments
Star product for flagship phone, smartwatch, and smart home showcases
| Display Technology | E-Ink (Electronic Paper) |
| Screen Size | 4.2" |
| 分辨率 | 400×300 pixels |
| Display Colors | Black / White / Red / Yellow (4-color) |
| 通信方式 | Bluetooth 5.0 (BLE) |
| Gateway Required | No — smartphone app control |
| App Range | ~10 meters from smartphone |
| 电池续航 | 5+ years (typical usage) |
| 工作温度 | -10°C to +60°C |
| 防护等级 | IP54 (Dust & Splash Resistant) |
| 材质 | ABS plastic housing |
* 规格如有变更，恕不另行通知。请联系我们获取最新资料。
BLE-420BWRY Electronic Shelf Label (Bluetooth) — 4.2" E-Ink electronic shelf label (ESL) featuring Black / White / Red / Yellow (4-color) 4-color display. Powered by Bluetooth 5.0 (BLE). No gateway needed — smartphone app control. 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, smart home showcases, premium boutiques.
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 BLE-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.
拓纬工厂直供——自2016年起的专业ESL制造商。联系我们获取批发报价、样品和OEM定制。
The BLE-420BWRY is a 4.2-inch Bluetooth ESL from Tocvue, our most popular BLE model for small 3C stores. It operates via Bluetooth 5.0 (BLE) with no base station needed — the smartphone app handles all price updates. The 400×300 pixel 4-color E-Ink display provides excellent readability for main display areas. With 5+ years battery life and tool-free setup, it offers the best balance of screen size and simplicity for small retailers.
BLE-420BWRY operates via Bluetooth 5.0 (BLE) and connects directly to a smartphone app. No base station, no gateway, no IT infrastructure needed — simply install the app and start updating prices within minutes.
4.2-inch inch E-Ink screen displays prices in Black, White, Red, and Yellow. Red and yellow highlighting makes promotions and clearance prices instantly visible to shoppers, driving attention to featured items without paper waste.
Powered by CR2450 batteries, BLE-420BWRY delivers over 5 years of continuous operation under normal use (up to 4 price updates per day). Batteries are user-replaceable, eliminating the need for unit replacement when power runs low.
Prices update in real time across all tags simultaneously. Whether changing a single item or running a store-wide promotion, changes reflect on shelf labels within seconds — no walking the floor with paper tags.
With IP54 dust and splash resistance, BLE-420BWRY is built for the retail environment. Its slim profile fits standard shelf rails, and the e-ink display remains readable even under bright store lighting.
Contact us for wholesale pricing. MOQ flexible. Samples available.
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