This system was originally designed for gun dog training. You can have up to six launchers working from one hand set. Basically you can launch ball or toy approximately 20ft into the air via a remote control anything from up to half a mile from the launcher.

A larger version of the above: For sports dog training we generally use the launcher for the send away and redirect.
In the service industry it can be used for ball reward on location. The launcher can be placed behind the baiter and released when the dog has given voice on location.
For search dogs i.e. explosive/drugs the launcher can be placed around the hide and again the ball can be released as a reward on location.
The main advantage of this system is that the dog can be rewarded instantly from a distance. The system also has a horn which can be used to focus the dog before he is sent in the early stages of training.