CZI
CZI TK3-M4 Tethered Power System for DJI Matrice 4 Series
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The CZI TK3-M4 Tethered Power System delivers continuous ground power to the DJI Matrice 4E and Matrice 4T, freeing the aircraft from onboard-battery flight limits for long-duration, stay-aloft missions. Stable high-voltage power runs up a 50 m tether from a portable ground station to a lightweight aviation-aluminum air module on the aircraft, so the drone can hold station for hours instead of minutes. A 5-inch high-brightness display, real-time fault monitoring, and an audible power-loss alarm keep the operator informed, and the backpack-friendly ground station and quick-disconnect design make it fast to deploy in the field. It is purpose-built for persistent surveillance, tactical overwatch, and other missions where the drone needs to stay up.
Continuous tethered power for the DJI Matrice 4E and 4T. Stay aloft for hours over a 50 m tether, with a portable ground station and real-time monitoring.
Features
- Continuous tethered power for extended, stay-aloft flight on the DJI Matrice 4E and Matrice 4T, removing the battery-swap cycle from persistent operations
- Stable high-voltage delivery from the ground station to the aircraft over a tether up to 50 m long
- Lightweight aviation-grade aluminum air module (≤ 530 g) with radiator and forced-air cooling
- Integrated 5-inch high-brightness ground station display showing output power, line strength, and system status
- Real-time system monitoring with on-screen fault diagnostics
- Audible power-loss alarm that sounds for up to 5 minutes after an accidental shutdown
- Comprehensive air-module protections: overvoltage, undervoltage, overtemperature, short-circuit, and overcurrent
- Wired and wireless OTA upgrade support, plus frequency matching between the ground and air modules
- Portable, backpack-compatible ground station with a quick-disconnect scaffolding design for fast setup and teardown
Specifications
Ground station
| Weight | 7.5 kg |
| Dimensions | 356 × 310 × 229 mm |
| Tether cable length | Up to 50 m |
| Display | 5-inch high-brightness integrated screen |
| Display information | Output power, line strength, system status |
| OTA upgrades | Wired and wireless |
| Power alarm | Audible, up to 5 minutes after accidental shutdown |
| Fault monitoring | On-screen fault diagnostics |
| Frequency matching | Ground and air modules support frequency matching |
| Scaffolding | Quick-detach design |
Air module
| Compatibility | DJI Matrice 4E / 4T |
| Shell material | Aviation aluminum alloy |
| Output power | 600 W |
| Input voltage | 380-420 VDC |
| Output voltage | 15-17 V |
| Rated output current | 38 A |
| Cooling | Radiator + forced air cooling |
| Protections | Overvoltage, undervoltage, overtemperature, short-circuit, overcurrent |
| Dimensions | 175 × 95 × 60 mm (L-type structure) |
| Weight | ≤ 530 g |
| SKU | CZI-TK3-M4E/T |
Applications
- Public safety operations and tactical overwatch
- Emergency response and disaster monitoring
- Traffic monitoring and event coverage
- Industrial inspection
- Perimeter security and persistent aerial surveillance
What's included
- 1 × TK3 Ground Station (with 50 m tether cable)
- 1 × DJI Matrice 4E/4T Air Module
Please note: The TK3-M4 is designed for the DJI Matrice 4E and Matrice 4T. The aircraft is sold separately. When tethered, the aircraft operates from ground power over the tether; effective operating height is governed by the 50 m tether length. Follow CZI and DJI documentation for installation and operation, and observe local regulations for tethered UAS operations, including any lighting, marking, or notification requirements that apply in your area.
FAQ
Which aircraft does the TK3-M4 work with?
The DJI Matrice 4E and Matrice 4T. The air module and mounting are built specifically for those airframes.
How high can the drone fly on the tether?
The tether is up to 50 m long, so the operating height is governed by that cable length (effective altitude is slightly less than the full tether length in practice). The benefit is endurance, not altitude: the aircraft can stay aloft for long-duration missions rather than being limited by battery time.
What does the ground station show me?
Its 5-inch high-brightness screen displays output power, line strength, and system status, along with on-screen fault diagnostics. An audible alarm sounds for up to 5 minutes if the system shuts down unexpectedly.
Is it portable?
Yes. The ground station is backpack-compatible and weighs 7.5 kg, and the quick-disconnect scaffolding design makes it fast to set up and pack down in the field.
What safety protections does it have?
The air module includes overvoltage, undervoltage, overtemperature, short-circuit, and overcurrent protection, with radiator and forced-air cooling to manage heat during continuous operation.
What's included?
The TK3 ground station with the 50 m tether cable and the DJI Matrice 4E/4T air module. The aircraft is sold separately.
