I have an interaction between SmartThings and some of my Z-Wave devices when commands are sent via Amazon Echo that I don’t quite understand and any guidance on the best resolution route would be appreciated (or even guesses as to what’s going on )
I have a room where there are no neutral wires (power is through the light), so I couldn’t use the standard on/off smart switch models. Since the fixtures in that room use conventional size bulbs, I decided to try a “software switch” instead pairing an accessory switch (this one) with some Hue bulbs and using SmartThings Routines to sync their state. This seemed to work well and integrated with my Amazon Echo room setups properly, so I got a couple more to deal with the same situation elsewhere.
Problems started when I set up a second of those switches (unsure whether that’s a factor in this but the issue definitely wasn’t present before that point). The switch operations work fine when triggered physically @ the switch (status of switch and bulbs reflected properly in SmartThings, routines linking them properly), however when I configure the devices into my Amazon Echo rooms, when I use a voice command to turn the room that contains the switch off, all of the members of the room (including the switch itself) are properly turned off BUT the switch state is not updated in SmartThings (switch is off, but SmartThings says it’s still in the on state).
This would be benign except that when the switch is off but SmartThings thinks it’s still on, hitting the on button changes the switch state physically but the automation won’t trigger, so to get the lights to turn on then I’d have to hit on (physical switch state changes, no change in SmartThings)/off (state appears as off in SmartThings)/on(switch changes state in SmartThings, triggering my automation).
If I give a second command to Alexa/Echos to turn the room off, the switch state will properly reflect as being off.
The lack of state change updates in SmartThings when the changes is triggered by Alexa/Echo still occurs even if there is no automation tied to the switch and if only one switch is in the room group (tried to eliminate interference as a possibility).
I installed a third of these same switches and found the same behavior occurs there too.