Easy you say 
Not so much for mortals.
As the SSR302 is a basic on/off switch, albeit a 2 channel one, shouldn’t a default Homey Zwave Inclusion work? but I get the same truncated error when I try it.
Doesn’t that indicate a deeper issue, I am probably being grossly over simplistic.
This is the only thing stopping moving over entirely to Homey, got all the thermostats, trvs just need to be able to turn on the heating now
