Suggested country house perimeter PIR pet friendly sensor [2026]

Hello everyone,

I am planning a high-reliability security “Inner Ring” for a property with a 23m x 19m perimeter. I intend to move to Home Assistant soon, but I have a strict requirement: the core deterrents must remain 100% functional even if the HA server is offline.

The Goal:

  1. Detection: Detect intruders approaching the house within a 6m zone along the 23m and 19m walls.
  2. Pet Immunity: Must reliably ignore foxes and cats (PIR/Microwave/Dual-beam).
  3. Local Deterrence: Motion should instantly trigger outdoor floodlights via a local hardware link (e.g., Shelly relay or alarm panel output) to ensure operation during server downtime.
  4. AI Verification: Once lights are on, AI-integrated Reolink cameras will identify if it’s a “Person.”
  5. Escalation: If a person is confirmed, the system will then send push notifications and trigger a full alarm/siren.

The Challenge: Uneven House Shape My house has an uneven, non-linear shape , which makes traditional curtain sensors unsuitable. I am looking to catch people as they enter the garden area, roughly 6 meters out from the perimeter, rather than waiting for them to be right against the building.

I’d love to hear from anyone who has built a “fail-secure” perimeter that balances “dumb” reliability with “smart” AI verification. Which can work regardless HA running, but may integrate in HA when running

Doberman? No AI needed. HomeAssistant independent.
Fox friendly? Why?
For wider coverage, you may need two or more.

Unfortunately my dog also loves foxes and deers. Lots of false positives!