Flash Triggering - Promaster ST1 Manual

Flash triggering

Before flash triggering, make sure the transmitter and
receiver are on the same channel, and a flash is placed
on each receiver's hotshoe.
Testing
Turn on the transmitter, receivers and flashes. Press the
transmitter's test button. All groups which have been
selected will flash at once. Receivers set to a different
channel will not flash.
Flash triggering
Each flash set to the same channel as your transmitter and
falling within the transmitter's chosen group will fire
according to the mode and power level set for that group.
Transmitter
Receiver
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