... Distance: 30m New WANSEN PT-04GY Wireless Flash Trigger for canon nikon Pentax Olympus camera Specifications:4 channels with hot shoe ... : one yearTriggering life: up to 20,000 times Compatible with:Canon SpeedLite 580EX II, 580EX, 550EX, 540EZ, 520EZ, 430EZ,430EX, 430EX ... , AF-400 FT, AF-240 FT;Sigma EF-530 DG Super, EF-500 DG Super, EF-430;Sunpak Auto 2000DZ, 622 Pro, 433AF ...