PT-04 4 channel Wireless Radio Hot Shoe Flash Trigger & Receiver set for Canon EOS, Nikon, Olympus & Pentax Flashes
Compatibile with:Canon SpeedLite :580EX II, 580EX, 550EX, 540EZ, 520EZ, 430EX/EXII, 430EZ, 420EX, 420EZ, 380EX;Nikon SpeedLight :SB-900, SB-800, SB-600, SB-28, SB-27, SB-26, SB-25, SB-24;Olympus : FL-50, FL36;Pentax :AF-540 FGZ, AF-360 FGZ, AF-400 FT, AF-240 FT;Sigma :EF-500 DG Super, EF-500 DG ST, EF-430;Sunpak : Auto 2000DZ, 622 Pro, 433AF, 433D, 383, 355AFm 344D, 333D;Vivitar :285HV .(Older Vivitar 285/283 works only with PC sync);-Other flash models with a trigger voltage of 12V or lower;-Work with flash units using universal hot shoe like Nikon, Sigma, Olympus, Pentax (except Minolta SONY as they use a special hot shoe).