The REDbird 5.8ghz RC Transceiver is a two way radio control system. Just like the 2.4ghz RC equipment. put a module in the drone to receive uplink data from the ground... or down link to ground also.
Since the Phantom 3 and Inspire 1 use only the 2.4ghz radio band, then the redbird 5.8ghz radio will not interfere with it.
Payload Control: The redbird 5.8ghz radio can control a payload flown on the drone. Such as lighting systems, loud speaker, and general purpose I/O up to the imagination of the user.
A lighting system can be modulated to the music playing on the ground, etc. etc.
Back to applications using the P2V+ ...
The REDbird 5.8ghz RC repeater and the DJI 2.4ghz WiFi repeater are the same size. Together they make a complete radio repeating solution for the Phantom Vision drones.
As a system, they can be remote mounted.
Mounted on a tripod allows you to set inside your car or shaded area. Mounted on a second repeater drone allows you to hover it hundreds if feet above your head. This enables a whole new way to fly out if or in to places that were previously impossible. Or, in an open area allows you to fly tbe P2V+ at ground level from take off all the way out to your current distances.