Buy on Amazon.com : http://www.amazon.com/gp/product/B00F9XDJJC?tag=catfoodrevi0a-20 <br /> <br />Phottix Odin TTL Flash Trigger Receiver for Canon v1.5 2.4GHz Frequency <br /> <br />Frequency 24 GHz <br />Distance 328 100m <br />Channels 4 <br />Groups 3 <br />Max Sync Speed 18000 sec
