Nissin MG80 Pro Flash for Cameras - Manual (Page 15)

NAS system owns the independent identity (ID) function to access strobes,
the NAS strobes will not be affected by other commanders whenever they
are using the same channel in the same location. A slave unit of Nissin
flash or Nissin receiver can only be controlled by one and only one NAS
commander with pairing in default setting.
Being part of the MG Series, MG80 Pro supports “Open Mode” and it can
let different cameras use the same set of strobe in one place.
Open Mode (MG Series and Air 10s only)
Hold the button of MG80 Pro for 1 seconds,
lights up on lower left corner or hold the
for 1 seconds again to turn off.
Open Mode Setting
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MG80 Pro Commander Mode
MG80 Pro Slave Mode
Hold the button of MG80 Pro for 1 seconds,
lights up on lower left corner or hold the
for 1 seconds again to turn off.
MG10 / MG8
Press OPEN button once to turn on the open mode, when turned on,
the indicator light will light on, press again to turn off.
Slave Flash