First off welcome to the forums! I will let an moderator do the full greeting.
Second, No Im afraid you cannont hook up the 4903 strobe to that panel since it puts out Full Wave Rectfied power. Which means most Simplex devices from the 90’s onwards will not work with this panel. It will fry them… Heres a list of the panels that Notifier makes and what power they output.
<URL url="Notifier & Fire-Lite: Filtered or Full Wave Rectified? text=“viewtopic.php?t=6616”>Notifier & Fire-Lite: Filtered or Full Wave Rectified?