Steve Hayman 🇨🇦🇬🇱🪊 on Nostr: Furnace motherboard has one set of connection points (red/black/green/white on the ...

Furnace motherboard has one set of connection points (red/black/green/white on the left) for a so-called "smart". Lennox thermostat, and a whole set of other connection points that the other 99% of the world's thermostats can use.