I am not familiar with 433MHz devices but I found this HC-12 link. Is that what you are using?
It seems it can operate on any one of 100 channels within the range 433.4-473.0MHz. It certainly cannot work at 315MHz - if that is what you are asking.
Presumably if you had a similar 315MHz module it could be connected to the same Arduino.
To the best of my knowledge the nRF24L01+ 2.4GHz transceivers (with which I am familiar) are much more sophisticated than the 433MHz modules. The nRF24 includes an "address" as part of each message so that several slave devices can receive separate messages from one master - all operating on the same channel. However the range of the nRF24 may not be as good as the 433MHz modules.