Low Temperature ESL, also known as Freezer-Grade Electronic Shelf Labels, are specialized E-Ink digital tags engineered for refrigerated, chilled and frozen environments. Unlike standard room-temperature ESL, they adopt low-temperature optimized e-paper panels, wide-temperature lithium batteries and high-grade waterproof housing. Stable operation within -25°C ~ +15°C, resisting condensation, frost and moisture inside freezers, cold display cabinets and cold storage warehouses. Support remote wireless price synchronization to replace easy-to-fade paper labels for frozen food, seafood, dairy and cold-chain pharmaceuticals.