The M400-46LM drone tethered system can meet the needs of the DJI M400 rotor drone platform, which is made up of sky end molds block and ground tethered power box. The electrical energy is transmitted from the ground to the sky end of the UAV through tensile and high-temperature resistant wires module, which is converted into DC voltage used by the drone to continuously supply power to the drone. Can be directly connected to the generator or 220V mains power or energy storage power supply allows drones to achieve ultra-long endurance empty operation on the basis of safety. The drone tethered system perfectly solves the three limitations of drones in the multi-rotor industry: 1. Air time – After connecting to the tethered system, the drone can be not limited by battery capacity to meet the long duration of the drone battery life requirements. 2. Safety – In special areas such as no-fly zones, crowd gatherings, and flammable and explosive, tethered drones can be maximized The risk is minimized while performing the task. 3. Ease of Use – Tethered drones can be operated with simple flying skills as a breeze.