Electronic Shelf Labels
4.2 inch ESL
The promotion tag. At 109 × 87 × 15 mm it carries promo art the size of a product scorecard, drawn by an imported CPU/RF chipset with an enhanced TCP transmission algorithm — strong error correction for dense radio fields where hundreds of tags push one campaign. Ultra-low-power sleep wake-up keeps the CR2450 × 4 pack inside its 5-year rating even on heavy promo days.
Key facts
- Size109 × 87 × 15 mm
- Refresh30–50 seconds
- ChipsetImported CPU / RF · enhanced TCP
- Frame colors5 — black/yellow · black/red · black/white · black/black · white/white
- Service life5 years (CR2450 × 4)
Why retailers choose it
- Imported CPU/RF chipset and an enhanced TCP transmission algorithm hold up in dense radio fields, where hundreds of tags push one promo at once.
- 30–50 s full-page refresh is a deliberate trade: big promo art without wrecking the battery budget on heavy days.
- Ultra-low-power sleep wake-up keeps the CR2450 × 4 pack inside its 5-year spec at 5 refreshes a day.
- Five frame colors — black/yellow, black/red, black/white, black/black, white/white — let planograms color-code zones instead of disclaiming them.
- 180° dot-matrix e-paper with a waterproof build, so promo tags can live in the chiller aisle too.
- Multi-store headquarters can push one price change to hundreds of promo tags in a single broadcast — the 30–50 s refresh absorbs the wave without collisions.
Full specifications
Datasheet
The 4.2-inch tag is built for places where a promo has to be seen, not searched. Beyond size, the differentiators are the chipset — imported CPU/RF silicon with an enhanced TCP error-correction algorithm — and a 30–50 s refresh tuned for battery conservation.
| Model | 4.2-inch ESL |
| Communication protocol | Bluetooth 4.2 |
| Screen type | Dot-matrix electronic paper |
| Display angle | 180° |
| Size | 109 × 87 × 15 mm |
| Chipset | Imported CPU/RF · enhanced TCP transmission |
| Refresh | 30–50 seconds |
| Display ability | Multiple languages, barcodes, QR codes, pictures |
| Battery | CR2450 × 4 button cells or rechargeable × 1 |
| Service life | 5 years (refreshed 5 times a day, replaceable) |
| Frame colors | 5 — black/yellow, black/red, black/white, black/black, white/white |
| Recognition distance | ≥ 5 m (adjustable) |
| Operating temperature | 0–50 °C |
| Environment | Waterproof · low-temperature resistant (aquatic/frozen areas) |
Grocery & Pharmacy
Promo blocks sized for gondola ends; the 30–50 s refresh suits day-part pricing and weekend pushes without a new battery fleet.
Superstores & Malls
Error-corrected TCP keeps 100-tag promo windows in sync across 20-aisle floors, where radio clutter is the real enemy.
Partners & Distributors
Five frame colors make brand-zone pilots easy to spec — one SKU covers both black-frame and white-frame planograms.
Samples in one week.
Tell us your fixture layout — we respond with a drawing and pricing within 48 hours.
