1Applicable Situations: Retailers use the ESL system to display product prices on shelves, often used in stores, supermarkets and hospitals, etc. 2Automatic Update: Whenever the price is changed from the central control server, the product pricing is automatically updated. 3Simple Operation: Support Bluetooth connection, just click from the remote server to automatically update the electronic shelf price. 4High Efficiency: No paper labels are required, and no store personnel are required to manually replace the price labels on each shelf. 5Compact Design: The electronic shelf label is small and compact, easy to carry, and can replace the battery, easy to use. Item Type: Electronic Shelf Label Material: ABS Purpose: Electronic price tag Connection Method: Bluetooth Battery Type: Button battery ( with built in battery) Battery Model: CR2450 Nominal Battery Capacity: 620mAh 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. 1 x Electronic Shelf LabelThe Bluetooth version ESL only supports for Android phones.