Compatible with DJI M4D 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 backup power-enabled cable retraction in case of power loss. Stable, regulated onboard power supply output; backup batteries exhibit no charging/discharging cycles or capacity loss. Compatible with Matrice 4D UAVs; supports flight duration ≥12 hours. Supports flight altitude ≥30/50 m (tether cable length: 33/55 m, with safety margin预留). UAV equipped with an integrated gimbal camera; optional mission payloads include floodlights, spotlights, and loudspeakers. Functional Features Safety Protection: Separation of high- and low-voltage circuits; comprehensive protection against overvoltage, overcurrent, short circuit, and overtemperature on all inputs and outputs. Automatic Cable Deployment/Retraction: Passive cable deployment; push-button automatic retraction; backup power-enabled retraction during power failure. Portability and Transport: Equipment housed in an aviation-grade case capable of accommodating the complete system, including the onboard power supply.