Vello FreeWave Flash Trigger LR User Manual page 15

Note: We recommend using a fully manual
controlled flash with this device. Since
the FreeWave Flash Trigger LR does not
transmit TTL settings, you will need to set
the power output of your flash manually.
Note: Your flash unit may enter sleep mode
after a period of non-use. To turn off your flash's
sleep mode, refer to the device's manual.
Note: The FreeWave Flash Trigger LR
receiver can be used with the Vello Captain
TTL system when using Channel 1-4.
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