DSLRKIT PT-08XT 8 Channels Wireless/R?adio Flash Trigger w/Antenna w/2 receiver This set includes 1pcs transmitter and 2pcs receivers Suitable for Canon SpeedLite 580EX II, 580EX, 550EX, 540EZ, 520EZ, 430EX/EXII, 430EZ, 420EX, 420EZ, 380EX Suitable for Nikon SpeedLight SB-900, SB-800, SB-600, SB-28, SB-27, SB-26, SB-25, SB-24 Suitable for 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) Suitable for 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)