The device can be seen as a kind of 'plug and play'. Open packaging, the supplied batteries in, plug in, photographing.
The function corresponds to the shutter of the camera and properly:
-Autofokus
-Serienbilder
everything possible.
The range of ... well, what can you say there. That's to be expected from radio more than infrared (only direct line of sight), is clear, but was the same throughout by 3 walls surprising. In short - more than adequate.
While the receiver unit has no attachment for the flash, but that was known and is very light.
CONCLUSIONS: Absolute buy recommendation