Start with Range extender

This video will explain all the good practices and limitation of the Range extender.

In environments such as underground galleries, stacks, or mines, signal propagation can be limited by the geometry of the place to inspect, and remotely operating a robot becomes difficult. By placing the remote controller antennas in a better location, closer to the drone, it is possible to extend the range of the drone. The Range Extender is an optional accessory that connects to Elios 3 ground control station, providing an extended signal reach for beyond line-of-sight operation.

What's in the box	Range extender
Range extender module	1
Range extender battery charger	1
Ranger batteries	3