YN560-TX, Manual Flash Controller, made specially for YONGNUO YN-560 III version after January of year 2013,but if you want to use it with our other YONGNUO flash speedlite,you just need the transceiver of Yongnuo RF-602, RF-603, RF-603 II, because YN560-TX has built-in wireless trigger system.
You can use it not only as flash controller function, but aslo use it as remote controller.
Remote Control of Flash output and Zoom per group, up to 6 groups, A/B/C/D/E/F
Use the wireless flash trigger kit to mount your flash to the receiver and remotely operate your flash from a distance of up to 100 meters. Great for group shots and studio photography to manipulate or eliminate shadows.
With large and clear LCD screen,easy to monitor the work status and all settings at a glance.