Websimplisafe® integrates with many smart home devices.
Websimplisafe (starting at $249. 96) is a smart home security system that's easy to set up and use, and keeps your home safe from intruders and environmental.
Webthe most important functionality to me was the ability to arm/disarm simplisafe through automation from ha which works great and with no noticeable.
Instructions on how to integrate simplisafe into home assistant.
Simplisafe with ha hardware.