help setting up a security system to trip fire alarm?

[kcin556]

@The Big Green

@kaptainkurk6065l

I did some research and would a 12V DPDT relay work as well?

A DPDT would work if you only used four of the eight terminals. Keep in mind your relay needs to be 24 VDC because that’s the output of fire alarm zones.

If the output on the security panel is 12V, a 12V relay should be used, because 12V may be below the minimum operating voltage for a 24V relay, which is usually around 16 Volts. What should be 24V is the contact rating, because, as The Big Green said, it is the output on the zones.