The TK300 Tether System is an automatic, lightweight, rugged power tethering station for the DJI Matrice 300. The TK300 consists of the ground power supply station and an onboard supply connector on the drone, interfacing with the battery connection port. Automatic tether control keeps tension on the tether cable to prevent getting caught in the propellers. Supply power with up to 100M of tether for long-term flight operations.