More on Amazon.com : http://www.amazon.com/gp/product/B00F9XDJJC?tag=thefatkidin06-20 Phottix Odin TTL Flash Trigger Receiver for Canon v1.5 2.4GHz Frequency Frequency 24 GHz Distance 328 100m Channels 4 Groups 3 Max Sync Speed 18000 sec
