... speed Maximum Working Distance: 30m New WANSEN PT-04GY Wireless Flash Trigger for canon nikon Pentax Olympus camera Specifications:4 channels ... -400 FT, AF-240 FT;Sigma EF-530 DG Super, EF-500 DG Super, EF-430;Sunpak Auto 2000DZ, 622 Pro, 433AF ... , 344D, 333D;Vivitar 285HV, DF-400MZ, DF-340MZ, 2700;Other flash models with a trigger voltage of 12V or lower Package ...