One YN560-TX II C Manual Flash Controller mounted into the camera can trigger YN560 IV Flash Speedlite off camera, because YN560 IV has the built-in wireless trigger system, it can receive the wireless signal from YN560-TX II N.

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 focal length of the YN560 IV and YN560 III.

Supports Wireless Slave Function
Fully supports YN560-TX II、RF-603（I/II）、RF-602 Wireless transmitter One YN560 IV can respectively receive the wireless signal from YN560 IV、YN560-TX II、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 wireless triggering, S1 and S2 pre flash cancel mode.

YN560 IV Specification:

Circuit design: Insulated Gate Bipolar Transistor (IGBT)
Guide No.: 58 meters (ISO 100, 105mm)
Flash mode: M, Multi
Triggering Mode: Camera set-up, TX, TX, S1, S2
Zoom range: 24, 28, 35, 50, 70, 80, 105mm
Power supply: 4 AAsize batteries (Alkaline or Ni-MH are usable, not included)
Lighting times:100-1500 times (AA alkaline cell used)
Recycle time: approx 3s (AA alkaline cell used)
Color temperature: 5600k
Flash time: 1/200s-1/20000s
Flash control: 8 levels of output control (1/128-1/1), 29 levels of fine tuning

Suit for Canon DSLR Cameras

Package Including:
1 x YN560 IV Negative LCD Screen Flash Unit
1 x YN560-TX II C
1 x Protecting bag
1 x Original box
1 x Manual in Chinese and English