At the Funkfernsteurungs kit that is supplied as the way "WR-10", there are really only two things to say: It's expensive and it's perfect. The WR-10 can be assembled without any problems (the transmitter / receiver WR-R10 is plugged with a kind of USB connector into the adapter WR-A10) and fits perfectly into the 10-pin connector of the D4. The release then takes place via the WR-T10 (transmitter). The radio remote control set is expensive, but worth every penny.
