Most of Sertag are system integrators, because they want to develop their own software to connect with Sertag's hardware to realize the function of digital tag change. As a professional electronic shelf label manufacturer, we can not only provide a complete electronic shelf label system, but also provide SDK data package (we call it middleware) for system integrators, that means the middleware just receives the data that they need to send, and Sertag is responsible for finding the base station to send it. 

Middleware is equivalent to a sender with an API interface (a program that sends data to the base station). System integrator team don't need Sertag electronic shelf labels system, they can develop electronic shelf labels system by themselves or hook up with their system.