15
Zwave Thermostat- Outlier stats
(feddit.nl)
Home Assistant is open source home automation that puts local control and privacy first. Powered by a worldwide community of tinkerers and DIY enthusiasts. Perfect to run on a Raspberry Pi or a local server. Available for free at home-assistant.io
-128 sounds like an error for sure. move your hub closer could help. If you're sure it's not a distance/signal issue it's the hub itself.