Fotodiox Pro, WonderBurst HSS8000 High Speed Radio Flash Trigger Kit for Canon Rebels XS, Xsi, XT, Xti, T1, T1i, T2, T2i, T3, T3i, T4i, 60D, (1C) - Walmart.com
Midwest Photo Westcott FJ-X2m Universal Wireless Flash Trigger with Sony Adapter
Amazon.com : Godox CT-16 Wireless Radio Flash Trigger Receiver Kit,Fit Compatible for Canon Nikon Pentax DSLR Camera Studio 3-in-1 Flash Transmitter and Receiver : Electronics
Canon Speedlite Transmitter ST-E3-RT - Canon Europe