Home automation is at its best when it blends seamlessly into everyday life – and security is no exception. With Home Assistant, I’ve developed a lightweight yet powerful geofencing-based alarm system that brings smart logic and context-awareness to household protection.
What Makes It Special?
Unlike traditional alarm setups that rely solely on sensors and timers, this solution leverages presence detection to decide when the alarm should be active. Using Home Assistant’s native device tracking, the system automatically arms itself when both parents have left the house and remains active until manually disarmed—ideal for situations like guests, children at home, or special exceptions.
When triggered (e.g., via Reolink camera with person detection), a custom Android push notification is sent using notification channels, complete with unique sound alerts—no third-party apps required.
Key Benefits
- Fully local & privacy-friendly
- Context-aware alarm control (manual override + automatic arming)
- Integration with existing Home Assistant setup
- Customizable notifications with distinct alert tones
- Minimal overhead – no external cloud dependencies
This project shows how you can build a smarter, more intuitive alarm system without proprietary limitations.
👉 Check out the code and detailed setup instructions on GitHub:
