Features: *Supports Wireless Master Function: The YN560 IV can be used as master unit, provides 3 independent groups with controlling ability, realizing remote control the flash mode, flash output and more→focal length of the YN560 IV and YN560 III. *Supports Wireless Slave Function, fully supports YN560-TX, RF-603(I/II), RF-602 Wireless transmitter: One YN560 IV can respectively receive the wireless signal from YN560 IV, YN560-TX, RF-603 (I/II), RF-602 with optional 16 channels; when the YN560 IV and YN560-TX used as transmitter, it can realize?remote control the parameter settings.? *Multiple Trigger Synchronous Mode Supported:? The YN560 IV can triggered through the set top of the camera, 2.4G …