Allows following terrain with very high precision on low altitude using an altimeter sensor.

Requires

•  on-board computer
• compatible altimeter (radar or laser)
•  ground control software

For new customers, it is recommended to order a combo consisting of software, hardware, and training.

Supported drones and autopilots:

• DJI M350 RTK
• DJI M300 RTK
• Pixhawk-compatible autopilots (Cube, etc.) with ArduCopter firmware 

It is the customer's responsibility to check the possibility to use a 24Ghz altimeter in a particular country.

Laser altimeter: can be used in any country, but works not so reliable in diverse environmental conditions and over high-reflective surfaces like water, ice, snow, and sand (under the bright sun).