The ZKTeco DG04-A1P21 is a 2.13-inch Electronic Shelf Label (ESL) specifically designed for low-temperature retail environments such as freezers, refrigerated displays, and fresh food storage. Featuring a high-contrast E-Ink display and Bluetooth 5.0 Low Energy (BLE) communication, it enables centralized, real-time updates of prices, promotions, and product information.

Equipped with a special low-temperature battery, the DG04-A1P21 operates reliably in temperatures as low as -25°C, making it ideal for supermarkets, grocery stores, cold storage facilities, and convenience stores. Its ultra-low power consumption, excellent readability, and durable design help reduce manual pricing errors while improving retail efficiency.

Key Features

• 2.13-inch E-Ink Electronic Shelf Label (ESL) for digital pricing.
• Designed for low-temperature environments down to -25°C.
• Bluetooth 5.0 Low Energy (BLE) wireless communication.
• High-resolution 212 × 104 pixel E-Ink display.
• Black & White display with excellent readability.
• Special low-temperature battery for reliable cold-storage operation.
• Battery life of up to 3–5 years (depending on update frequency).
• Near 180° viewing angle with power-off display retention.
• Enables real-time price and product information updates through centralized management.
• Ideal for supermarkets, refrigerated displays, freezers, cold rooms, and smart retail environments.