The Yongnuo YN-622N-TX control unit is the perfect complement for the professional i-TTL wireless flash triggers Yongnuo YN-622N. The control unit has a large LC display, which allows a much faster and more convenient remote control of compatible TTL flash units compared to the exclusive use of the YN-622N. Separate control of up to 3 groups on 7 channels with a radio range of up to 100 meters is possible. In addition to triggering on the 1st curtain, the YN-622N-TX control unit also offers the possibility of triggering on the 2nd curtain (SCS), a short-time synchronization (Auto FP) for shutter speeds up to 1/8000s as well as SuperSync for manual correction of the shutter speed. Furthermore, the YN-622N transceivers can also be used in conjunction with the YN-622N-TX control unit to trigger the camera.