The COBRA Dish Antenna is a 120 degree unidirectional antenna for improving signal strength in one direction.

The dish replaces the standard antenna on the 18R2 remote control and provides a +8 dBm gain.

This translates to an additional 300 - 600 ft. (100 to 200m).

Although your range is increased, the dish antenna is also helpful for close range situations where you don't have direct line-of-sight, or you don't wish to raise your modules or antennas.

You can also use the dish antenna directly on your 18M module for situations where a single module may be a significant distance away.