Since the Fire Safety set injects CO2 into the camber, to extinguish a fire, and given that I have an inline Duct Fan installed, it seems counter intuitive to rapidly remove the CO2 in case of a fire. 

I've noticed the setup youtube videos have a smart switches to cut power to devices that pair directly with the fire safety set; however, I can not find the compatible smart switch to purchase online which I could use to cut power to my inline duct fan should the fire safety set trigger.