Looking for a radio actuated switch thing...

[lincpimp]

Here is what I am looking for. Something that I can plug directly into the receiver and use it to switch my led lighting on and off via the 3rd channel. It would be nice if it has a pos and neg output, with either switched, but preferably the pos wire.

Anything like this exist? Does not have to be able to hand a ton of power, I am only using 6 leds total.