Is there any Sertag Esl system description available and is on-premise or cloud solution?

Sertag electonic shelf labels sysytem based on Net 6.0 or later.it is  the third generation ESL products (ESL gen3) named eRetail 3.0.

eRetail 3.0 can be simply divided into three parts: 1DataSync / API、2eRetail 3.0and3hardware devices.

Among them, API is Restful style web API, which is responsible for providing interface for customer system to actively push commodity data; Data sync is a background service that actively grabs data from the customer system (such as database, WebAPI, Excel, etc.); SDK is responsible for managing commodity data, hardware equipment information, scheduling price change tasks etc.

The hardware includes wireless communication base station, tag and related network equipment.

You can read the file attached for detail information about the system structure.