I have added the Honeywell WiFi 9000 thermostat and there is a built in support in Smart Things now for this, interfacing with Honeywell’s Total Connect Comfort (TCC) API.
It seems to work good enough for my needs, but I keep getting push notifications that “Honeywell TCC has disconnected”. It doesn’t appear to reconnect either. It currently shows 76 F on the smart things feed for this device, but the actual device shows 71 F. Trying to turn it on from the Smartthings app does nothing, so it must be disconnected.
Anyone else having this issue? Any remedies?