This control box has a separate power supply, which adds a layer of protection as an intruder cannot simply disable a part of ...

He thus set about working on a burglar alarm that would fit his unique requirements. An ESP32 is the heart of the operation, paired with a long-range LoRa radio module running at 868 MHz.

[Jeff Sandberg] demonstrates that ably with his project to use ancient 1990s burglar alarm sensors in his modern smarthome setup. The sensors in question are from an old GM Interlogix security system.