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If each manufacturer developed their products according to their own protocols, communication between.
Their products would be extremely complicated - the more assorted the mix manufacturers, the more complicated it becomes.
![Communication between products conforming to different protocols is complex.](../img/necessary_e1.gif)
If the protocols are unified into a specified standard, it is no longer necessary to convert between the various protocols, marking it easier to connect new equipment and expand existing systems.
![Standardized protocol. Conduct interoperability tests.](../img/necessary_e2.gif)
The HATS Forum aims to assure interoperability and facilitate the
design of systems and networks.
![assure interoperability](../img/necessary_e3.gif)
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