Quote Originally Posted by wideangle View Post
Thanks for your help. So its the high voltage from triggers that would possibly fry cameras/flashes, but it would have to be a lot higher voltage than a couple of volts to kill it.....I have no idea about this voltage stuff!
The trigger is probably the least likely part of the chain to give any problems. It runs at lower voltages than your camera or flash unit.

Basically, you don't want voltages going from one component to another that are higher than all the parts are designed to withstand. Your flash is engineered to work with the camera. Both the camera and flash units run higher voltages than the trigger so there should be no problems there.
I assume that you are buying the triggers to use the flash of the camera so there fore in the event that flash voltage tries to leak back through the receiver and damage anything it can't actually get to the camera anyway. The actual trigger on the camera is still well below the voltage that you camera operates at and should not present any problems.