So I send these devices some time ago risen. At that time, my claims were ziehmlich small. I just wanted my Speedlite 430EX II from a certain Distanze trigger without a second flash to have to buy. In the room works wonderfully. In order to photograph water droplets with a Entfaesselten flashlight reaches this set !! But there's ****.
So now I've bought a 5D Mark II and further flashes. In my first outdoor shootings I was already stuzig because the flash from time to time not triggered. I grabbed new AAA in the receiver, but the same. However, I went closer to the receiver so it worked again. So I was doing all the things I picked up from then on. 30m? I would say less than 5m.
Think about what you want so use those things!
Greetings Kenneth