I had terrible luck with cactus triggers (I bought two). I posted somewhere on here about my story. IMO I wouldn't buy them unless its just for macro shots. They are too unreliable unless modded CORRECTLY. If you want to return or do warranty, shipping to china cost about $15 bucks and it takes weeks.
You can also order them from MPEX.COM and get them a few days earlier. They are located in Ohio, USA.
1 - Did you replace the batteries with fresh ones? They state in the documentation the batteries are for test purposes only
2 - Did you mod the trigger? I really do get 350+ feet with mine after the mod:
The only way to incorrectly mod the trigger is use the wrong thickness/length wire and to do a bad solder connection. Both are extremely easy to avoid or fix!
The #1 reason they did not work right for 99% of the people straight out of the box, was that the batteries were not replaced with fresh ones. People who do that suddenly have no issues (well, shooting up to a maximum of 30 feet without the very simple mod).
The one thing that I do not like is that when you place the flash on the hotshoe adapter of the Cactus receiver, it is not very solid and it raises the flash too high if you are shooting into an umbrella. That hotshoe adapter from FlashZebra.com (great guy and great place to buy from), lowers it nicely and is much more stable. So for the cost of this adapter and a 6" male-male sync cord, I get a lot more stability. The one that gryphonslair99 shows is the exact one that I have on my setup.
Edit: I bought 9 receivers (two 16-ch and seven 4-ch models) and 3 transmitters. Everything worked as advertised out of the box and all three modded triggers have the same range. However, I did have to redo the antenna connection on one of them a second time after it's first test, it did not want to trigger properly due to that. A little more care with the soldered connection on the 2nd try on my end and "Bob's Your Uncle".
