Using HA with a Conventional Alarm System - the best option?

[truxntrax]

I did this.

Make the Texecom Veritas 8 Smart(ish)

I wanted to keep my wired alarm (Veritas 8) functioning how it does today but add onto it some smartness. I didn’t want to rely on anything that may reboot or go off-line for security so I added a node mcu, a pcf extender and a relay board. I mounted everything next to the alarm panel in an old double socket box, but removed all the guts and added a reset switch, which actually is never required, it seems pretty stable. I used a cheap ali express buck converter to get the correct voltage for…