Firstly, many thanks to everyone on this community, especially @JDRoberts who has been very patient to everyone. And to @hongtat for the MCO device handler and @zcapr17 for the Zwave Tweaker.
I’ve gotten two single gang MCO switches (non-Gen 5 versions) for a two-way application (staircase lights), and I thought with all the help here, I wouldn’t have too much problem setting up associations in Group 1 of both switches.
I’ve used the Zwave Tweaker to set up the said associations, and it works like a charm as long as I’m using the Zwave Tweaker as a DTH. Manually switching on/off either MCO switch would almost instantaneously turn on/off the other switch. Perfect.
But then, when I changed the DTH back to @hongtat 's handler for the MCO switches, the association is then broken. Neither switch turns on each other.
Could anyone here give any pointers what the problem might be, and how I might go about trying to solve it? Could it be that these switches are non-zwave plus, and that they use Association Group 1 to send Binary Switch Set commands to other nodes, instead of Group 2?
I know @Sebastian_Iaconis in this thread managed to associate two MCO switches together… any advice how I could get this to work?
Thanks a million everyone.