YONGNUO YN560 IV Wireless Flash Speedlite Master + Slave Flash + Built-in Trigger System for Canon Nikon Pentax Olympus Fujifilm Panasonic Digital Cameras

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Feature

YN560 IV=YN560III+YN560-TX, Supports Wireless Master Function.
Supports Wireless Slave Function, fully supports YN560-TX, RF-603 II RF-602 Wireless Transmitter.
Supports Multiple Trigger Synchronous Mode. Enure the battery is fully changed.
Supports setting save automatically, custom settings ( fn ). Verify the Flash light setting
Supports ultra-fast charging recycle system, External power supply. Check the remote control settings before use

Description

Trouble shooting steps: -User need to do setting on Camera Flash light Control Menu to allow out-put flash light. -Long press button or examine if the battery in right position.