Nice acquisitions!
RSG is the original maker of the SP-series, & funnily enough their RMS-series has the same design flaw (only if the handle is very slowly & carefully pulled down though).
No idea why a pull station of all things would be polarized (I can understand addressable ones being polarized though since obviously their addressable module needs proper polarity for power), since conventional ones are nothing more than a switch.
Well that’s convenient: glad Apollo’s not proprietary like that (unlike some manufacturers).