Yongnuo RF-603CII-C3 Wireless Flash Trigger Kit for Canon 10D 20D 30D 1D Mark II with TARION Flash Diffuser Adopts 2 levers button design, it will realize the awakening, flash testing, focus and shutter function in &quot;TX&quot; and &quot;TRX&quot; state respectively. Supports single contact triggering. Can achieve wired and wireless remote shutter release function. Handhold the flash for remote flash trigger sync. Remote shooting with flash trigger sync. LS-2.5 C3 shutter connecting cable. Hot shoe locking prevents device slipping off. Suitable for Canon 10D / 20D / 30D / 40D / 50D / 1D / 1D Mark II / 1D Mark III / 1D Mark IV / 1Ds / 1Ds Mark II / 1Ds Mark III / 5D / 5D Mark II / 5D Mark III / 1DX / 6D / 7D.The complimentary product flash diffuser is suitable for hot shoe flash.