I got in contact with Den.
Den products talk to each other using a standard ZigBee 3.0 profile.
It takes a huge amount of resource to get these things talking but we’ve designed our products to work with both Amazon’s Echo and Google Home. We do not plan to ever have an open API so you would not be able to connect to other systems but we are working towards being compatible with Apple HomeKit in the future.
Question: Does anyone know if there will be any problem to have in the same house and network both ST hub and Den hub since they both use ZigBee?
The pricing of Den looks very good compared to what is out in the market.
“Kleverness” Products will also be released in the future but double the price. They will be supporting ST.