I have integrated them with Home Assistant integration the and HA reports the following in the log:
- Error fetching Badkamer TRV2 data: Sleeping device did not update within 3600 seconds interval
- Error fetching Badkamer TRV1 data: Sleeping device did not update within 3600 seconds interval
I'm not too familiar with HA, but it seems it's polling the HTTP endpoints. Does HA support MQTT? The TRV periodically checking and updating the MQTT topics might be able to deal with unstable connections better compared to polling...