X Photo XTLMRUN Instruction Manual - page 8
Manual is about: Pro Series Universal 2 in 1 LED Macro Ring Light & Flash
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Basic functions
1.Basic Operations
Operation of the buttons:
Components
Press this button to adjust the output power of the flash.
Press this button to keep the flash lights on. Used in video shooting
and macro photography.
Press this button to test the input brightness of the speedlite.
Operation
Press once, the mode will change among the FLASH/L/R.
The power of flashlight can be opened or closed by holding this
button for 2 seconds.