nostr:npub1t2dd8cesvwethk0ekqa4njm0x035wunzwftlvkq6j7adc72372vs3n5a5f 
I haven't tried it but everything I looked at under the "shop" page seems to be out of stock.

I use an Ecobee - yeah it records a bunch of stuff but it also has the features I wanted like precooling and prewarming the home. It also knows about the high cost time periods so it can avoid use during those periods.

The prior thermostat only used four wires - the Ecobee comes with an adapter. But the cable had five wires so I made the changes needed so I could run w/o adapter.