Can i fully control the gateway and the esl, no internet/cloud access required?

Can i fully control the gateway and the esl, no internet/cloud access required?

Can i fully control the gateway and the esl, no internet/cloud access required?
If the 2.4G gateway provides a HTTP interface, I assume that's all I need to fully control the gateway and the electronic shelf labels , no internet/cloud access required?
Yes, if you only use it in the LAN, and the number is small, you can use our sertag  gateway as a electronic shelf labels  server and you can directly call the http API of our server