I assume the ZXT 120 is the remotec IR thermostat simulator used with air-conditioners? If so, it should work fine, but you will need a custom device type handler for it:
I have a ZXT-120 from Remotec which I can’t seem to get working correctly with my ST Hub.
I have added the device from @bdahlem but can only toggle through the modes. I can’t get it to read temp and I can’t seem to do anything in a smart app other than set the hot and cool temp. I want want to be able issue mode commands like “Turn On AC”, 'Turn on Heat", “Turn on Dry” and “Turn Off”
When I watch the logs I don’t see any output from the device. I would like to see that message the unit is sending.
This device has pretty good documentation on it’s zwave communication. So I am hoping to learn enough to fix the code for this device type.
http://www.remotec.com.hk/photos/software/Z-wave/ZXT-120%20User%20Manual_V05_20120810.pdf
Does anyone have this device working ?