Power Backup
This generator includes a WiFi control module and a Mobile Link application and capability from Honeywell. I found both the free and paid service capabilities of this service very limited and without an integration to Home Assistant.
I chose to disconnect the Honeywell WiFi module and utilize a custom opensource GenMon software and Home Assistant integration to manage and monitor the generator. Trouble free since 2021.

Also requires:
- Raspberry Pi 4 4GB
1.5GHz 64-bit quad-core CPU - Includes 32GB Samsung EVO+ Micro SD Case
- Integrated Fan Mount and Fan, Heat Sinks
Features
- MQTT integration Home Assistant
- Maintenance, Start / Stop and Alarm Logs
- Generator warnings and faults
- Power Outage Information
- Generator Service Information
- Generator Exercise Automation and Control
- Generator Operation Information
- Ability to start, stop, exercise the transfer switch
- Fuel consumption
- Service Journal for logging maintenance, repair, etc
- Backup configuration files
- Display Generator Controller Information
Reference
Buy direct.