“With HomeSpan you can use the full power of the ESP32’s I/O functionality ... with Setup Codes or QR Codes. For more information on the HomeKit home automation HomeSpan Arduino library ...

If you’ve got a similar panel, you might even be able to use his source code and circuit ... trusting an ESP32 connected to the Internet with the ability to disarm your home alarm system.

In essence, you connect a common 433 MHz receiver module to an ESP32 or ESP8266 microcontroller, and have it wait until a specific device squawks out. From there, the code on the ESP can fire off ...