Hello Hannah, thanks for reaching out. For replacing your Edwards Signaling G4HFWA-S7VMC, you have a few options to choose from. The compatible replacements include the EG4SVWA, G4SVWA, G4SVWF, and G4AWA-CVR. Each of these models can meet your needs depending on the specific requirements of your setup. Make sure to verify compatibility with your existing system before making a choice. If you have any more questions or need further assistance, feel free to ask.