Feature: 1. Multiple Usages: Retailers use electronic shelf labels (ESL) to display product prices on shelves, which can be used in stores, supermarkets, hospitals, etc. 2. Automatic Update: Whenever the price is changed from the central control server, the product pricing on the label will be automatically updated. 3. Simple Operation: Bluetooth connection, just click from the remote server, the electronic shelf price tag can be automatically updated at the same time. 4. Portable Design: The electronic shelf label is small and compact, and the battery can be replaced at any time, which is convenient to use and carry. 5. High Efficiency: No paper labels are needed, and there is no need to manually replace the price labels on each shelf, which greatly improves work efficiency. Specification: Item Type: Electronic Shelf Label Material: ABS Purpose: Electronic price tag Connection Method: Bluetooth Battery Type: Button battery x 4 (shipped with built in battery) Battery Model: CR2450 Nominal Battery Capacity: 2480mAh Functions: 1. Efficiency: 30 minutes for less than 20000 units 2. Success Rate: 100% 3. Transmission Technology: 433MHz radio frequency, anti interference ability of WiFi devices such as mobile phones. 4. Transmission Range: Coverage range approx. 30-50meter / 98.4-164ft 5. Display Template: Support dot matrix image display 6. Working Temperature: Normal label 0℃-40℃, refrigeration environment label -25℃-15℃ 7. Communication And Interaction: Dual wave communication, real time interaction 8. Product Standby Time: 5 years, the battery can be replaced 9. Docking System: Support text, Excel, tables, intermediate data import, user defined development, etc.. Package List: 1 x Electronic Shelf Label Note: The Bluetooth version ESL only supports for Android phones.