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I did my research and found out in order to get my TT685 flashes to work with my trigger I had to not only set the channel and group but also set them on an "ID" located in the menus. Actually, you don't need to set the C.Fn ID to anything; it just has to match on all your units. You can have this feature set to OFF on your transmitter/lights if ...


Set the ID to "OFF" on the transmitter and the TT685 flashes. For models without the ID capability to work with models that do, all of them need to have the ID set to "OFF".


Must be your wireless id. Your checked everything else inclucing the channel. The one thing everyone forgets is the id#.

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