while deep diving into professional alarm systems I found out the real “good ones” are using a 2-way-communication. Meaning every x hours they wave “hello, I’m alive” to the Homebase.
Heimdall offers this option as well (sensors didn’t respond within last 24 hrs).
As I am using the Zigbee Xiaomi door / window contact sensors I know that they cannot communicate proactively but respond to action (open: y/n), only.
Does anyone know contact sensors that support this 2-way-communication feature??
Edit: I learned that it’s not a 2way communication but somewhat a heartbeat function. Thx!