Engineered for demanding, long-duration aerial operations, the CZI TK4 Tethered Power System delivers continuous, reliable power to the DJI Matrice 400. Designed for mission-critical applications such as surveillance, public safety, and infrastructure inspection, the TK4 eliminates battery limitations while ensuring stable performance, high-quality video transmission, and enhanced operational safety.

Powerful 800V High-Voltage System for Greater Efficiency

The TK4 Tethered Power System utilizes an advanced 800V high-voltage design to significantly reduce power loss. Compared to a 400V system, it operates at half the current while reducing cable heat to just one quarter. The airborne unit provides a stable 50V output with a rated power of 4 kW, ensuring consistent, reliable performance for the DJI Matrice 400 and its payloads.

Stable, Interference-Resistant Video Transmission

The system uses power line carrier (PLC) communication between the ground station and airborne unit, supporting bandwidth up to 100 Mbps. This easily handles high-frame-rate, high-bitrate 4K video transmission. Video can be output from the ground station via HDMI or Ethernet directly to a command center. Designed for strong resistance to radio-frequency interference, the TK4 maintains a stable and dependable connection in demanding environments.

Extended Cable Length for Higher Flight Operations

The TK4 includes a standard 110-meter tether cable, with optional configurations up to 200 meters. This extended reach allows the drone to operate at higher altitudes, making it ideal for long-duration aerial monitoring and expanded coverage.

Enhanced Support for High-Power Lighting

An upgraded lighting power output delivers up to 1500W, allowing the TK4 to support demanding illumination setups. It can simultaneously support an 800W CZI ML200 and a 300W CZI GL300, providing strong, reliable lighting for nighttime or low-visibility operations.

Integrated Grounding Protection for Safer Operation

When working near high-voltage power lines, induced voltage can pose a safety risk. The TK4 includes a grounding rod to safely discharge excess current into the ground, helping reduce the risk of electric shock. The system features a standard grounding interface, allowing flexibility to use different rod lengths depending on terrain and site conditions.

Built-In Wireless Connectivity for Easy Control

With integrated Bluetooth and Wi-Fi modules, the TK4 allows users to connect directly to the ground station using a smartphone. This enables convenient, wireless system monitoring and control from a mobile device.

Keep your operations powered, connected, and mission-ready with the CZI TK4 Tethered Power System.

In the Box

1 – TK4 Ground Power Station (with integrated display and controls)
1 – Airborne Power Module (drone-mounted unit)
1 – 110 m, or 200 m Tethered Power Cable (depending on model)
1 – Grounding Rod (for electrical safety)
Power Cables & Connection Accessories
User Documentation

Specifications

Ground Station

Dimensions: ≤ 415×345×254 mm (including handle & base)
Weight: ≤ 13 kg (including 110 m cable)
Input Voltage: 176-264 VAC (50/60 Hz)
Output Voltage: 800 V
Output Power: 4.5 kw
Communication Bandwidth: 100 M
Type-C Fast Charging Port: Max power: 65 W, supports PD3.0/QC protocols
Screen Size: 5.5 inches
Screen Resolution: 1920×1080
Backup Battery: 2600 mAh, 22.2 V
Speaker Power: 10 W
Cable Length: 110 m or 200 m
Cable Current Capacity: 5 A
Cable Voltage Rating: DC 2000 V
Cable Weight: 1.25 kg/100 m
Cable Tensile Strength: > 50 kg
Video Output Interfaces: HDMI, Network ports
Max Operating Ground Elevation: 4000 m
Operating Temperature Range: -20℃ to 50℃ (without solar radiation)
Storage Temperature Range: -40℃ to 70℃

Airborne Unit

Dimensions: ≤ 190×155×86 mm (main body, excluding connectors)
Weight: ≤ 2 kg (main body, excluding mounting hardware)
Rated Output Power: 4000 W
Output Voltage: 50 V
Video Input Interface: Type-C
Max Operating Ground Elevation: 4000 m
IP Rating: IP55
Operating Temperature Range: -20℃ to 50℃ (without solar radiation)
Storage Temperature Range: -40℃ to 70℃

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