The Global Cache GC-100 is a network addressed unit that HCA can use to send IR signals.  Some of the GC-100 models also have Relays and digital inputs.

Just what can the GC-100 control?  Anything that the Global Cache IR Learner can record a sequence for.

HCA supports up to 4 GC-100s in simultaneous use.  If the model provides relays and digital inputs, HCA supports them also.

More information can be found on the Global Cache website.