Hi 2sc
You would need to speak to HAI to see if they have CBUS Enabled their Panels...
This usually means using a serial board on the HAI panel talking to a Clipsal PCI (pc interface).....
If a serial interface isnt available from HAI then maybe you could use some relay outputs on the HAI connected to some Clipsal 4 channel bus couplers..This would allow you to control CBUS from the HAI panel.....
HTH
Frank