I use a Sonoff SV just for that, it got two inputs, using one as sensor for "Armed" and one for "Alarm triggered".
The one relay output is used to turn the alarm on or off remotely.
Home Automation
Home automation is the residential extension of building automation.
It is automation of the home, housework or household activity.
Home automation may include centralized control of lighting, HVAC (heating, ventilation and air conditioning), appliances, security locks of gates and doors and other systems, to provide improved convenience, comfort, energy efficiency and security.
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Finally I went for Shelly UNI, it's a very nice piece of kit and it worked like a charm. You connect its inputs to the alarm's programmable outputs and you integrate this with your home automation system. It is wifi although I would have preferred zigbee/zwave but I could not find something better