Smartthings integration with two wire fire system

Looking for some advice to see if this is possible.

I used Konnected to convert my old hardwired sensors from a previous security system to smart things. However, they do not work with the two wire fire systems.

As far as I can tell, the way these work is voltage is applied through the fire sensors (some are smoke, most are temp sensors that trigger with rapid temp rise or >140° F) and the same wire carries a trigger signal if the temp sensor is tripped. Possibly by reversing polarity.

Anyone know if it’s possible to use one of the Smartthings shields to integrate these? I have a shield, I’m confident at wiring and stuff but the programming part is what scares me away.