Blazzeo™ "MegTrig" Trigger Kit Model SLT-04 includes one transmitter and one reciever. The transmitter is to be attached on the hot shoe of the camera while the receiver is to be attached to external flash. Each receiver works with one flash. You can use as many flashes as you wish as long as you have enough receivers.
Hot Shoe Camera Flash Stand for Canon Nikon Sigma Speedlite. Not compatible with Sony and Minolta Camera Flashguns.
|Blazzeo™ Wireless Hot Shoe Flash Trigger for Canon 430EX 580EX II||US$14.99|
|Hot Shoe Camera Flash Stand for Canon Nikon Sigma Speedlite||US$2.99|
I've been using this flash trigger with two receivers for my two 580EX2 for over 6 months both outdoors and indoors. They've worked perfectly, if they ever misfire it's because the flashes or receivers run out of battery power, once the batteries are changed they're back to normal. I highly recommend them for the price and ease of use. I will be shooting with 3 flashes from now and looking forward to having them all sync simultaneously.