To distribute the library:

Upload this code to your virtual Arduino in Proteus.

Proteus provides a vast library of electronic components that can be used to design and simulate circuits. However, sometimes the component we need is not available in the default library. In such cases, we need to create a new library or download an existing one from the internet. In this article, we will provide a 4-channel relay module library for Proteus that you can use to simulate and design your circuits.