To simulate a real 433MHz RF link, you do not actually need an RF module in Proteus. Simply connect:
: For professional-grade CAD models, including symbols, footprints, and 3D models for PCB layout (ARES), use the SnapMagic HT12E page SamacSys Proteus Libraries How to Install the Library Files Once you have downloaded the library (usually a file), follow these steps to integrate them: Extract the Files ht12e and ht12d proteus library file download extra quality
HT12E and HT12D Proteus Library File Download Extra Quality To simulate a real 433MHz RF link, you