Yongnuo RF-603 II 16-Ch Wireless Flash Trigger for Canon 3-Pin Connection 1D/5D/7D/10D/20D/30D/40D/50D Cameras， 2.4GHz， 1/320sec Sync Speed[Product Information]- Enter your model numberto make sure this fits.
- 1， Higher sync speed than the first generation --- The highest flash sync speed up to 1/320 second (some of models may only reach to 1/250s or less， difference combination of models of flash and camera using may achieved difference flash sync speed).
- 2， Adding the Locking rings
- 3， Improved Flash / Shutter control Buttons
- 4， Working for more non Canon/Nikon cameras and single firing pin cameras --- ALL Standard Hot shoe DSLR Camera except Sony and Minolta.
- 5， Adding the power switch for single transmitter --- Set the power switch on TX (single transmit) or TRX (transmit-receive automatic switch) state according to different shooting requirement. When it used as wireless triggering transmitter and flash testing， set to "TX"; When it used as wireless triggering receiver， using shutter release or other extended functions， set to "TRX". set to OFF means turn off the power.
