How to use alarm trigger (siren) to trigger external alarm

[tr2088]

Hey,
am trying to use the base station alarm/siren to trigger an additional siren. unfortunately IFTTT does not allow to grab that signal nor did i find an alternative way.
Does anyone have any ideas how to create a routine/set-up for this task or even would know whether any of the 4 pins inside the base station could provide such a signal? and no - i don’t want to take the signal from the cameras as i want this alarm only when the base station is armed.thanks

[TomMac]

If you know how, you could use the leads off the alarm speaker to trigger an external alarm.... but this is an outside the box treatment and would void any warranty.

[tr2088]

i opened the base station already (don’t care about the guarantee as i need to find a solution). the issue is that the siren is a piezo element, ie the signal not clean but “wavy”. hence i hope that i can find a work around either via IFTTT or from the pins on the circuit board ....