--- 4 Channel Relay Module Library For Proteus [portable] -

She didn't need a perfect footprint for simulation, but she added a 16-pin DIP header footprint so that later, if she designed a PCB, the layout would match a real module's pinout.

Launch Proteus ISIS.

In this article, we will discuss what a 4-channel relay is, why you need a dedicated library, how to download and install it correctly, and finally, how to simulate a home automation project using this library. --- 4 Channel Relay Module Library For Proteus

Note: Some libraries may be named Relay_4_Chan.LIB . She didn't need a perfect footprint for simulation,