Hi Guys
A little late in replying ....... Is it not possible to inject zoned ir into each keypad back at the controller ???
I designed a little circuit which a guy in the UK is using to inject ir into the wiring of his Multizone Kustom Amp to control each zone via his ha controller Homevision........
Dont suppose they would part with the details of the zone rj45 connector to see if modulated ir injection is possible ???
Heres a link to my interface which i use to interface to my cbus ir unit
Didnt actually get to test it on a Kustom Setup......
Frank