Popp Smoke and Fibaro Issues

[alarm_guy1]

Hi I have a couple of Popp Smokes and several Fibaro Relays and Dimmers, by default the Fibaro relays are set to pluse/flash lights on detection of a fire alarm and the Popps automatically interlink so when one sounds so does the other
This is all cool, however my question is about stopping it all.

the Popps just get stuck in a loop one goes off the other goes off and repeat and repeat etc etc etc, so
1, how the hell do you stop them?
2, The only way I have found to stop the lights flashing is to switch each switch off, however one does not have a switch attached and is not that easy to get to

Is there another way to stop the whole process, generally a reboot does some of the work

Any help please.