Compatible with DJI M4 tethered drone system

Typical Features Compact size and lightweight for easy portability Simple operation: the entire UAV takeoff and landing process requires no operator intervention with the tethering box. Comprehensive input/output protection functions, fault-clearing self-recovery, push-button cable deployment/retraction, and battery-powered cable retraction in case of power loss. Onboard power supply provides constant, regulated output voltage; backup batteries exhibit no charging/discharging cycles or capacity loss. Compatible with Matrice 4 UAVs. Supported flight duration: ≥12 hours. Supported flight altitude: ≥30/50 m (tether cable length: 33/55 m, with safety margin预留). UAV-integrated gimbal camera; optional mission payloads include floodlights, spotlights, and loudspeakers. Functional Features Safety Protection: Separation of high- and low-voltage circuits; comprehensive overvoltage, overcurrent, short-circuit, and overtemperature protection for all inputs and outputs. Automatic Cable Deployment/Retraction: Passive cable deployment; push-button automatic retraction; battery-powered retraction during power failure. Portability and Transport: Equipment includes an aviation-grade transport case capable of housing the complete system, including the onboard power supply.