TAG21 - 2.1" ESL Tag

TAG21 — 2.13" black-white-red electronic shelf label. The workhorse format for shelf-edge pricing.

Smallest tag in the Sovereign Shelf catalog and the most common deployment choice. Battery-powered, BLE-updated, mounts on standard shelf rails with a TM-01 or TM-A* clip.

Specifications

• Display: 2.13" e-paper, 250 x 128 px, black / white / red
• Orientation: portrait, 90° rotation in firmware (128 x 250 logical)
• Radio: Bluetooth Low Energy, 2.4 GHz, channels 37 / 38 / 39
• Battery: 1 x CR2450 cell, replaceable, 5–7 year typical life
• Refresh time: ~3 seconds for a full BWR update
• Mounting: snap-in to TM-01 (flat), TM-A10 (10°), or TM-A30 (30°) clips
• MAC prefix: c43 / 143

Highlights

• Most popular size — fits standard grocery and retail shelf rails out of the box.
• BWR display means sale prices and promotional callouts can be highlighted in red without changing the tag.
• Bulk-volume discounts apply once you cross the 500-unit and 1,000-unit thresholds.
• Tag buy-back program — tags can be returned for up to full value if a deployment is decommissioned (conditions apply).

Where it fits

• Aisle and shelf-edge pricing on standard retail fixtures.
• Pick-by-light bin tagging when paired with the Guardian tier.
• Compatible with all Sovereign Shelf tiers: Sentinel, Guardian, Vault.