The "Drone Tethered Power System" - Rosefinch Technology is one of the leading manufacturers of drone tethering power station.
Rosefinch mainly engages in the R&D, production, sales of the drone tether power system.
The system is compatible for all multi rotor drones with MTOW 3-120kg.

 
These products are used and deployed by armed forces, law enforcement, civil security, and private security in 30+ countries 100+ clients for event protection, perimeter surveillance, border protection, radio communications, long-duration health monitoring, emergency communication, traffic management, environment inspections, scientific research and many more.

Our products are qualified by CNAS with physical performance and electrical performance testing （EMC+LVD+EMF+RF) , and verified by CE, FCC, UL. 

We have always adhered to independent research and development of core technologies.
The air module adopts a output voltage stabilizing circuit scheme, with a wide range of input and constant voltage output, which is different from the commonly used Vicor power supply unstable voltage scheme on the market;
It can ensure that the backup battery in parallel with it has no charging or discharging phenomenon, no battery capacity loss, and is only used as backup battery for landing, achieving true long-term tethering flight without battery capacity loss;
The automated winch system adopts a difference between the reel out tension and reel in tension, and an adaptive torque transformation scheme, chieving true automatic tether cable reel in & out function without human intervention.

Our Mission:

To provide customers with the best quality, fastest service, and most cost-effective UAV tethered station with professional skills.

Our Vision: 

Becoming one of the top providers of UAV tether power system solutions.

Our Values:
Win-win with all upstream and downstream cooperative partner.

Why Choose US? 
History
In 2022, began the R&D of industry tethered power systems suitable for DJI drones, launched the tether power systems for matrice 300.

In 2023, it successively launched tether power stations for DJI M3, DJI M30, DJI Flycart30.

Until 2026, our product list have covered standard tether station for DJI M4T, Matrice 30, Matrice 350RTK, Matrice 400, Flycart 30, Flycart100;
and universal 500W, 2KW, 3KW, 6KW, 7KW, 9KW, 10.5KW, 12KW, 14KW, 18KW, 21KW, 24KW, 28KW tether stations for other multi-rotor drones.