There might be some relevant information in [OBSOLETE] Enerwave ZWN-RSM2 (v1 & v2) & RSM2-Plus —Smart Dual Relay Switch Module - Devices & Integrations / Community Created Device Types - SmartThings Community. It looks like Eric established that the parameter 3 simply didn’t exist on the device despite what the manual suggested and that the way to get switch 2 was to use association group 3 (or something like that - I am not fluent in the terminology).
1 Like