There are two ways to specify a command.
Z wave ir controller.
Z uno ir controller supports up 4 outputs pins 4 6 ir tx2 ir tx0 see pinout and one input pin 7 or ir rx.
Zxt 600 ac master is a z wave plus compliant z wave to ir bridge to control split air conditioner by receiving z wave command and translating to infrared command.
So it just depends on the particular device you want to control.
Fortunately i found and installed the global cache gc100 plugin to allow me to use my vera to communicate to a global cache ir product to transmit ir signals.
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Hogar ir controller is an intelligent wireless remote control center for all ir controlled devices such astv set up box ac blu ray dvd etc.
A third alternative is to get a z wave device that can broadcast ir and there are a couple of community members using one the remotec hvac zxt120.
The remotec z wave a c controller zxt 600 is a z wave plus to ir extender for your split system air conditioner ac it works with any z wave compliant gateway or controller by translating z wave thermostat commands to ac ir infra red control code.
It won t require a laptop as a bridge but it offers many fewer commands then either harmony or global cachet.
With its comprehensive built in and cloud stored ir database library.
Fortunately the vera2 z wave controller is also extendable to interact with various other devices over the lan using plugins.