DJI M400 drone tethered system | DJI Matrice 400 tethered system

The DJI M400 drone tethered system, it converts single‑phase AC power into high‑voltage DC power and delivers it to the onboard power module through a high‑performance nickel‑alloy power cable, providing continuous power for the DJI Matrice 400 RTK drone, enables up to 12 hours of safe, continuous flight endurance.

This tethered system is a DJI SDK-based tether solution that is deeply compatible with the DJI M400 drone. The tether system communicates directly with the aircraft, enabling real-time monitoring of tether status and live display of operating data, which significantly enhances the safety of tethered flights. Through the DJI Pilot 2 application, operators can directly control and manage the tether system, achieving seamless integration of flight control and tether operation.

The DJI M400 tether system integrated cable reel unit combines the ground power supply, high‑performance power cable, and automatic cable winding/unwinding mechanism in one highly compact module. It supports both backpack and hand‑carry deployment. While maintaining excellent portability, the ground power unit also ensures fast automatic retraction and release of up to 110 meters of cable. The mechanism effectively reduces impacts and sharp bends on the cable, providing reliable protection and greatly extending cable service life.

The tether system consists of 3 main components:

Onboard power module (Air Power Module )
Ground Power Station (Integrated manual/automatic cable reel unit )
Matrix lighting system (optional )

Fetures :

Deep Integration with DJI Matrice 400 Series

Compatible with the DJI Matrice 400 series, the system connects via the original tethered battery interface, requiring no modification to the drone.

Long-Duration Safe Power Supply

The system converts single-phase AC power into stable high-voltage DC output and delivers it to the onboard power module through a nickel-alloy tether cable, providing continuous power to the drone.
The onboard backup battery is reserved for emergency use and power-loss protection, ensuring safe flight and landing in case of ground power interruption.

Isolated Power Design for Drone and High-Power Payloads

The onboard power module provides electrical isolation between the power supplied to the drone and the power supplied to other high-power payloads, effectively ensuring the safety of the aircraft’s power system.
The onboard power module powers the drone directly but does not charge the drone’s battery.

Deep System-Level Control and Monitoring

Fully integrated into the DJI ecosystem, the tethered system can be monitored in real time via the DJI Pilot 2 app on the DJI remote controller, providing live status of tethered operation.

Integrated Cable Reel and Ground Power Unit

The hybrid manual/automatic cable reel unit highly integrates the ground power supply, high-performance power cable, and automatic cable winding/unwinding mechanism, balancing portability and robustness.

Carrying Options

Supports both hand-carry and backpack modes
The backpack system is ergonomically designed, making it suitable for individual operators on long-distance missions

DJI Pilot 2 – Controllable and Monitorable Functions

Through DJI Pilot 2 on the DJI remote controller, the operator can centrally control and monitor the tethered power and lighting system, including:

Power on / off for the ground power system
Start / stop ground cable retraction
Adjustment of cable retraction tension
Real-time display of cable length deployed from the ground unit
Floodlight on / off
Floodlight brightness adjustment
Red/blue strobe light on / off
Monitoring of other key ground power system status parameters

Application Scenarios

The TE400 ground–air power and lighting system is ideal for long-duration, high-stability aerial operations, including but not limited to:

Public security, emergency response, and firefighting scene lighting and command
Security and emergency support for large-scale events
Urban patrol, traffic management, and incident handling
Border patrol, critical infrastructure protection, and facility security
Communication relay and temporary surveillance point deployment
Disaster-site search and rescue, as well as night-time rescue lighting

Specs

Item	Specification
Tethered Ground Power Station
Product	Tethered Ground Power Station
Compatible Model	DJI Matrice 400 RTK
Dimensions	≤ 370 × 262 × 230 mm
Weight	8.5 kg
Tether Cable Length	110 m
Rated Power	3500 W
Chassis / Interface	LCD real-time display of voltage, current, power, and cable-out length; visualized operation; standalone controller (knob type); dedicated tripod included
Material	7075 high‑strength aluminum alloy chassis
Power‑out Protection	If ground power is unexpectedly interrupted, the aircraft can continue flying and land safely
DJI Pilot 2 Control/Monitoring	Ground power on/off; cable reel in/out on/off; retrieval force setting; cable-out length display; floodlight on/off and brightness; red/blue strobe on/off; other status indicators
Air Power Module
Weight	< 600 g
Power Isolation Design	Isolates UAV power from other high‑power loads; protects the UAV power supply; powers the airframe only (does not charge batteries)
Communication	Communicates with the UAV; reports status to the flight controller; real-time display in DJI Pilot 2
Mounting	Quick-release
Operating Temperature	−20 to 50 °C
Matrix Lights (optional)
Dimensions	≤ 300 × 120 × 40 mm (2 pcs )
Weight	500 g X2
Electrical Interfaces	E‑PORT, USB Type‑C
Beam Angle (white)	60°
Input Voltage	DC 24–60 V
Light Types	White 6500 K; red/blue strobe
Power / Luminous Flux (white)	≥ 1200 W / 120,000 lm
Pitch Adjustment Range	0°–45°