Vexilar Flasher Family 2013 - Manual (Page 14)

14
Interference Rejection comes on automatically when
you power up the flasher. You can turn it off by
pressing on the gain control.
If interference from another sounder is present on
the display, press this button repeatedly until it goes
away or is reduced as much as possible.
FL-18, FL-20
and
FLX-28
Interference Rejection comes on automatically when you power up
the flasher. If interference from another sounder is present on the
display, press the gain control repeatedly until it goes away or is
reduced as much as possible.
FL-8SE
and
FL-12