Yes, you can!

Your main monitor in the system is known as the master,
and any additional monitors are known as subs. You can have up to four
monitors in your system that can be called simultaneously – one master and three subs. Most of our monitors can be either masters or subs,
except the CDV-470DX, which cannot be set up as a sub. If your system
already includes this model, you will need to add a different model as an
additional monitor, such as the CDV-43.
Don’t forget to also ask your installer about cable quality. When extra parts are added into the system, cable quality becomes more important to ensure smooth communication.

CDV-43 |
CDV-47B |
CDV-47W |
CDV-470DX-B |
CDV-470DX-W |