Yongnuo YN560 III 2 PCS Flash Speedlite kit + YN560 TX Flash Controller for Nikon DSLR Cameras 1.YN-560III Wireless Flash Speedlite Trigger Controller fits for Canon Nikon Olympus Pentax 2.One YN-560 III can receive the wireless signal from YN-560III,YN-560-TX,RF-603 II and RF-602 with optical 16 channels 3.When YN-560 III and YN-560 TX used as transmitter,it can realize remote control and parameter settings. 4.YN560TX can Remote Control of Flash output and Zoom per group, up to 6 groups, A/B/C/D/E/F 16 Channels 2,4GHz 100M Range 5. YN560TX has two versions , this one is for Nikon DSLR cameras.