Multiple RFXTRX receivers


I’m new to Home Assistant. For testing I’ve installed core version 2021.2.3 on a raspberry pi 2B. Once I had a domoticz setup with two transceivers: RFXTRX434 and RFXTRX868 (for my Visonic Alarmsystem) They are both connected via Ser2Net on 2 different ports on one IP. Currently I’m not able to install the RFXTRX integration for both receivers. Can someone give some advice?