DJI Dock 4 and DJI Matrice 5TD
How does the DJI Dock 4 differ from the DJI Dock 3?
The DJI Dock 4 introduces these primary improvements over the DJI Dock 3:
Features a new mechanical battery-swapping system that completes a full exchange in only 25 seconds.
Broadens the supported operating temperatures to span from -40° to 50° C (-40° to 122° F).
Relocates the RTK and video transmission modules into the mandatory O4 Ground Station, allowing for highly adaptable installation.
Utilizes the drone batteries stored within the compartment as a secondary, backup power source for the dock itself.
Includes Wi-Fi QuickTransfer capabilities so media files can be rapidly offloaded to the dock the moment the drone lands.
Uses the sub2G frequency band via the O4 Ground Station for video transmission, resulting in superior resistance to signal interference.*
Allows for setup in challenging environments, such as densely built urban areas near high-rise structures.
*Available operating frequencies vary by region. Please consult your local laws for specific details.
**Deploying near high-rise structures relies on adequate satellite positioning coverage, which is currently supported across most of the Asia Pacific region. The O4 Ground Station must be installed in a clear, open area. Prior to setup, you must perform a site survey of the installation location using a Matrice 4 Series or Matrice 4D drone. Consult the Installation and Setup Manual for full deployment guidelines and coverage specifics.
What is the battery swap time for the DJI Dock 4, and what is the minimum turnaround time between flights?
A battery swap is completed in 25 seconds, starting once the dock cover is completely closed. The shortest possible time between consecutive operations is 45 seconds.*
*Data was recorded under controlled test conditions and is provided for reference purposes. This timeframe represents the total turnaround cycle, from the moment the drone lands to its next takeoff after the battery swap is finished.
How is the aircraft's battery swapped when using the DJI Dock 4?
The batteries are swapped through one of three methods:
Upon returning from an operation, the dock automatically swaps the aircraft's battery if its current charge is below 79%.
In DJI FlightHub 2, navigate to Devices > select the corresponding device > Device Maintenance > Remote Debugging > Dock Control > Manual Swap, and choose the target battery slot to execute the swap.
Connect your mobile phone to the dock, launch the DJI Enterprise app, and tap Debug > Battery Swap > Manual Swap, then select the desired battery slot to execute the swap.
What is the maximum number of batteries the DJI Dock 4 compartments can hold?
The dock features four individual battery compartments. However, to allow the battery-swapping mechanism to function correctly, a maximum of three batteries can be stored in the dock at one time.
How can I activate the backup battery power for the DJI Dock 4?
If grid power is unavailable, you can enable backup battery power* by short-pressing, then pressing and holding the multifunction button located inside the power distribution cabinet. When grid power is connected, the backup power activates automatically and requires no manual input.
*Ensure at least one battery is installed in the dock. If AC power is lost, the system will automatically switch to backup power as long as the stored battery has more than a 10% charge. You can manually enable or disable this backup power by short-pressing, then pressing and holding the multifunction button.
How do I turn DJI Dock 4 off?
If there is at least one battery in the dock, first turn off the AC power switch, then short-press and long-press the multifunction button inside the power distribution cabinet to turn off the backup power. If there are no batteries installed, you only need to turn off the AC power switch.
What are the steps to reset the DJI Dock 4 battery swapping turntable?
You can use either of the following two methods:
Check that the battery swapping turntable is clear of any debris, then press and hold the battery installation/removal confirmation button on the power distribution cabinet for 10 seconds to initiate a reset.*
Power the dock off and turn it back on. The turntable will reset automatically upon restart.
Is edge computing supported by the DJI Dock 4?
Yes. The O4 Ground Station enables edge computing by connecting to an external switch for data communication.
Is private 4G enhanced video transmission supported on the DJI Dock 4?
Yes. You can find more details at the official DJI developer portal.
What drone models are compatible with the DJI Dock 4?
The DJI Dock 4 is exclusively compatible with the DJI Matrice 5TD.
How do the heating and cooling systems work on the DJI Dock 4?
Cooling: Cooling activates when the ambient temperature is higher than 5° C (41° F), a stored battery is currently charging, and that battery's temperature rises above 35° C (95° F). It turns off once charging finishes and the battery temperature cools to below 30° C (86° F).
Heating: Heating turns on when the ambient temperature falls below 5° C (41° F), provided both the internal dock temperature and battery temperature are under 35° C (95° F). It shuts off if either the dock interior or the battery temperature exceeds 35° C (95° F).
Heating and cooling logic is subject to change with future firmware updates to improve performance. Actual system behavior may vary.
What environmental conditions and site requirements are needed to install the DJI Dock 4?
Install the DJI Dock 4 in a location with reliable power and network access at an elevation below 5,000 meters. The O4 Ground Station requires an open, unobstructed area. Before securing the station in place, perform an aerial site survey with the aircraft to determine the best mounting point. For full instructions, consult the Installation and Setup Manual.
What are the maximum wind speed and rain conditions supported for normal DJI Dock 4 operation?
The DJI Dock 4 can operate normally in wind speeds up to 12 m/s and rainfall up to 2 mm/h.
Can the DJI Dock 4 charge the aircraft using backup power?
No.
Can the DJI Dock 4 continue operating during a power outage?
Yes. In the event of a grid power outage, the dock remains operational and can continue performing aircraft battery swaps using the batteries stored inside its compartments.
When connected to grid power, only one battery in the compartment is needed to perform a swap. Without grid power, at least two batteries must be installed.
How does the aircraft perform a precision landing on the DJI Dock 4?
The aircraft first navigates back to the departure point via RTK positioning. As it approaches, it uses LiDAR and visual SLAM to map the surrounding environment, then aligns this data with the visual markers on the dock's landing pad to complete a precision landing.
Where can I buy the DJI Dock 4?
Please contact us for more details.
What drone models can be used to conduct a site survey for the DJI Dock 4?
DJI Matrice 4 Series and DJI Matrice 4D Series.
Make sure both the aircraft and the remote controller are updated to the latest firmware version.
Can the DJI Dock 4 operate without an O4 Ground Station?
No. The DJI Dock 4 must be connected to an O4 Ground Station to operate.
Does the DJI Dock 4 share the same mounting hole pattern as the DJI Dock 3?
Yes. Both the DJI Dock 4 and DJI Dock 3 use the same 400 mm × 400 mm mounting hole pattern.
What are the minimum network speed and bandwidth requirements for the DJI Dock 4?
The dock features an auto-negotiating Ethernet interface, with a Gigabit connection recommended. Minimum uplink and downlink speeds must exceed 20 Mbps, though 40 Mbps or higher is advised when no external devices share the connection. For the best operational experience, keep network latency under 100 ms.
How loud is the DJI Dock 4 during operation?
Operating noise is under 60 dB in Silent mode and reaches approximately 65 dB in Normal mode.
What should I keep in mind when installing the O4 Ground Station for the DJI Dock 4?
The O4 Ground Station must be anchored to a rigid ground or wall surface in an elevated, unobstructed deployment zone. To prevent RF degradation, isolate the unit from external communication transmitters and dense metallic objects. A continuous line of sight between the ground station and the dock landing surface is mandatory to ensure reliable video transmission with the berthed aircraft. Interconnect cable runs between the dock and the station must remain within the supported range of 1.5 m to 80 m.
What does the O4 Ground Station do?
The unit provides the dock with long-range video transmission, RTK base station positioning, network routing, and local data processing.
How does the O4 Ground Station communicate with the dock?
The O4 Ground Station and the dock connect using a single Ethernet cable. Utilizing Power over Ethernet (PoE), this cable delivers both network communication and a reliable power supply to the ground station.
Can the DJI Dock 4's O4 Ground Station be used with other drone models?
The dock-connected O4 Ground Station is locked to the specific paired aircraft. It cannot be configured as an independent or roaming relay to communicate with external aircraft.
What upgrades does the DJI Matrice 5TD offer compared to the Matrice 4TD?
The DJI Matrice 5TD introduces key enhancements over the Matrice 4TD:
Sub-2 GHz Transmission: Expanded spectrum support improves link stability in high-interference environments.
Dual 4G Integration: Built-in dual 4G modules provide enhanced cellular redundancy.*
59-Minute Flight Time: Extended endurance for longer operational sorties.
Extreme Climate Resilience: Fully operational from -40°C to 50°C (-40°F to 122°F).
Advanced Optical & Thermal Suite: 1280 × 1024 infrared resolution and an upgraded 11× ultra-telephoto camera.
Multi-Color Warning Beacon: Integrated, customizable visual indicator for airspace awareness.
Multi-Sensor Obstacle Avoidance: Hybrid sensing system combining onboard LiDAR and millimeter-wave radar.
Modular Payload Expansion: Up to 450 g payload allowance with three dedicated ports supporting top and lateral mounting.
Enhanced Edge AI: Onboard computer vision model now detects 17 object classes.
*4G cellular connectivity is unavailable in certain countries and regions. Please consult your local authorized DJI dealer for regional availability and compliance details.
**Tested under controlled laboratory conditions: windless environment at 20 m above sea level, flying forward at a constant 15 m/s with no payload from 100% battery to 0%. Actual flight times may vary based on environmental conditions, flight profiles, operational load, and firmware version.
What is the DJI Matrice 5TD's IP rating?
IP55.
What precautions should be taken when operating the DJI Matrice 5TD infrared thermal camera?
Do not aim the thermal camera directly at intense energy sources, including the sun, laser beams, or lava. Exposing the sensor to extreme radiation will burn the focal plane array and result in permanent hardware failure.
Why do the DJI Matrice 5TD frame arms have slight play, and why are there visible gaps at their base?
The DJI Matrice 5TD utilizes integrated rotational dampers at the arm bases to minimize vibration and enhance flight reliability. Slight arm play and visible seam gaps are normal engineering features of this system. Do not forcibly twist, flex, or swing the arms during handling and transport.
What precautions should be taken when using the anti-icing propellers on the DJI Matrice 5TD?
The anti-icing performance of the propellers naturally degrades with operational wear. Replace propeller sets every 500 flight hours or at least once every 12 months, whichever threshold is reached first.
Avoid scratching the blade surfaces or handling them directly with bare hands. Never clean the blades with oil-based or alcohol-based solvents, as chemical exposure will break down the anti-icing surface coating.
Propellers are dynamically balanced in paired sets during manufacturing. Always install propellers sourced from the same original packaging—never mix and match blades across different packages.
Inspect blades regularly and replace them immediately if any warping, bending, or physical damage is detected. Whenever propellers are swapped, install the new matching washers and screws provided; do not reuse old hardware. When reinstalling the propeller clamp, confirm that the clamp’s alignment locating pin is fully seated into the designated motor mounting receptacle.
What is the purpose of the curved propeller tips on the DJI Matrice 5TD?
To reduce aerodynamic noise and achieve quieter flight operations.
Can the DJI Matrice 5TD be flown manually with a remote controller?
No.
How do I set up and use the built-in 4G Enhanced Transmission on the DJI Matrice 5TD?
The DJI Matrice 5TD includes native dual 4G hardware modules. To establish cellular transmission, seat a verified nano-SIM card with an active data package into the designated card slot. Once inserted, engage the 4G interface via either configuration route in the control software:
Route 1: Device Status Window → Remote Debugging, then toggle the 4G enable switch.
Route 2: Devices → Device Maintenance → Remote Debugging → Aircraft Control, then toggle the 4G enable switch.
4G connectivity is not available in certain countries or regions. Please consult your local authorized DJI dealer for regional support details.
Can the DJI Matrice 5TD carry multiple payloads at the same time?
Yes. The aircraft supports up to three payloads simultaneously across three dedicated mounting locations: one on the top and two on the sides of the fuselage.
What routine maintenance does the DJI Matrice 5TD require?
Basic Maintenance (Every 6 months): Thorough cleaning, comprehensive hardware inspection, firmware updates, and sensor calibration.
Regular Maintenance (Every 12 months or 500 flight hours, whichever occurs first): Thorough cleaning, component inspection, firmware updates, sensor calibration, and proactive replacement of standard wear parts.
Deep Maintenance (Every 36 months or 1,000 flight hours, whichever occurs first): Full overhaul including deep cleaning, structural inspection, firmware updates, calibration, wear part replacement, and complete propulsion system replacement.
Can the DJI Matrice 5TD be used for high-precision mapping?
Yes. When operating standard grid missions (orthorectified or oblique routes, non-Terrain Follow) at an altitude of 120 m with 12MP imagery, the Matrice 5TD achieves an aerial triangulation checkpoint accuracy of 10 cm.
Specific test conditions:
(1) Conducted in an environment with optimal illumination and well-defined structural surface geometry, utilizing an O4 Ground Station referenced to custom Network RTK; non-Terrain-Follow grid missions were planned via DJI FlightHub 2 at default cruise velocity, with 70% side overlap and 80% forward overlap, recording 12MP wide-angle imagery.
(2) Ground control and checkpoint markers consisted of rigid, non-vegetated surfaces exhibiting ideal diffuse reflectance characteristics.
(3) Photogrammetric reconstruction and aerial triangulation executed within DJI Terra or DJI FlightHub 2.
Does the DJI Matrice 5TD support Smart Oblique Capture?
Yes.
Which EU drone class certification does the DJI Matrice 5TD hold?
The DJI Matrice 5TD holds both C5 and C6 class identification labels under EU regulations.
How do I charge the flight batteries for the DJI Matrice 5TD?
The battery charges automatically once it is placed into the dock's battery compartment.
What is the charging time for the DJI Matrice 5TD battery?
At an ambient temperature of 25°C (77°F), recharging a battery from 15% to 95% in the dock compartment takes approximately 27 minutes. The dock is capable of charging up to two batteries concurrently.
Can the DJI Matrice 5TD battery operate in cold-weather environments?
Yes. The battery shares the exact same operating temperature range as the aircraft. In cold-weather conditions, the battery automatically engages its self-heating function to maintain optimal operating temperature.
What is the rated cycle life of the DJI Matrice 5TD battery?
The battery is rated for up to 400 charge-discharge cycles, provided it is not stored at temperatures above 35°C (95°F) for more than 100 cumulative days over a 12-month period. Prolonged exposure to elevated storage temperatures degrades cell stability and service life. Always replace the battery when prompted by the system.
How should the DJI Matrice 5TD battery be stored and maintained during long-term non-use?
Store the battery at approximately 25°C (77°F) in a cool, dry area away from direct sunlight and extreme cold. Inspect the state of charge every six months, and recharge the battery promptly if the power level has dropped significantly.
What regulations and safety precautions apply to transporting the DJI Matrice 5TD battery?
When transporting batteries, pack each one individually in a certified flame-retardant pouch or explosion-proof container to prevent short circuits. Ensure all containers are firmly secured in transit; unsecured packs can shift, collide, or suffer puncture and impact damage from vehicle vibrations, creating a severe fire hazard.
What are the main functions of the DJI AS2D Speaker?
The DJI AS2D speaker has the following functions to make emergency search and rescue operations more efficient and flexible:
How is the DJI ASD Speaker different from the DJI AS1 Speaker?
Over 2x Volume Increase: Delivers up to 120.5 dB at 1 m, more than doubling the volume of the previous generation.
Optimized Downward Projection: The downward-firing speaker orientation significantly boosts sound penetration and clarity at ground level.
AI Text-to-Speech*: Features onboard AI voice synthesis to deliver natural, human-like voice broadcasts.
*Only supported via DJI FlightHub 2 Public Cloud.
Which aircrafts are compatible with the DJI AS2D Speaker?
DJI Matrice 5TD.
What precautions should I be aware of when I'm installing the DJI AS2D Speaker?
Secure the speaker to the left mount of the aircraft using the supplied screws.
Ensure the aircraft is powered off prior to mounting or connecting the speaker.
Fully seat the connector and secure the screws snugly; do not overtighten, and avoid pulling the cable to preserve ingress protection.
Connect to the internet, follow the prompts to activate the speaker, calibrate the compass, and apply any pending firmware updates.
What safety precautions should be observed when operating the DJI AS2D Speaker?
Installing the speaker reduces propulsion headroom and total flight endurance; fly with heightened awareness.
Avoid emitting continuous single-frequency audio signals to prevent irreparable transducer failure.
The unit produces extreme sound pressure levels. Do not operate at short range or near noise-sensitive urban infrastructure to prevent acoustic trauma and community hazards.
What languages are supported by the DJI AS2D Speaker for text-to-speech?
The speaker supports seven languages: Mandarin Chinese, English, Japanese, Korean, French, Spanish, and German. Both male and female voices are available for Mandarin Chinese and English, while the remaining languages are limited to female voices only.
What best practices should be followed when using the real-time broadcasting feature of the DJI AS2D Speaker?
For the clearest audio during real-time broadcasts, a dedicated handheld microphone is recommended. When relying on a computer microphone, speak close to the sensor and maintain an even cadence. Activate live broadcasting by pressing the backtick key ( ` ); you can also map your handheld microphone's PTT switch directly to the backtick key ( ` ) for rapid push-to-talk capability.
How do I update the firmware on the DJI AS2D Speaker?
Once mounted to the aircraft, the speaker's firmware updates concurrently with the airframe system. Update using either of the following methods:
DJI FlightHub 2: Navigate to the Device Management page and execute a one-click firmware update.
DJI Assistant 2: Connect the aircraft directly to a PC or Mac and perform the update via DJI Assistant 2 (Enterprise Series).
What is the effective broadcast distance of the DJI AS2D Speaker?
400 meters.
What is the IP rating of the DJI AS2D Speaker?
IP55.
What features and lighting modes are supported by the DJI AL2D Spotlight?
The spotlight features four lighting presets (Floodlight, Spotlight, Both On, and Auto) and two strobe alert settings (Fast Strobe and Slow Strobe). Operators can also toggle gimbal follow on or off.
What are the main differences between the DJI AL2D Spotlight and the DJI AL1 Spotlight?
The DJI AL2D Spotlight provides a major performance upgrade, delivering 2.6 times the brightness of the previous generation. It introduces a new dual-lens, high-intensity optical system capable of toggling between narrow spotlight and wide floodlight coverage, and supports a tilt angle of up to +90° for effective upward illumination during inspection flights.
Which aircraft are compatible with the DJI AL2D Spotlight?
The spotlight is compatible exclusively with the DJI Matrice 5TD aircraft.
What precautions should be taken when installing the DJI AL2D Spotlight?
Secure the spotlight to the right accessory mount of the aircraft and tighten all screws.
Ensure the aircraft is powered off before installing or connecting the payload.
Fully seat the connector plug and tighten the connector screws properly; do not overtighten, and avoid pulling the cable to protect the waterproof seal.
Connect to the internet, follow the prompts to activate the spotlight, and update the firmware promptly if a new version is available.
What precautions should I take when I use the DJI AL2D Spotlight?
Flight Performance & Obstacle Sensing: Installing the spotlight impacts propulsion efficiency and reduces overall flight endurance. When the spotlight is illuminated, the visual obstacle sensing system is automatically disabled, leaving only the millimeter-wave (mmWave) radar and LiDAR active. This reduces omnidirectional obstacle sensing performance—fly with heightened caution.
Optical Safety: DO NOT shine the spotlight directly into anyone’s eyes, as the high-intensity light output can cause severe ocular injury or temporary blindness.
Thermal Hazard: The spotlight housing reaches elevated temperatures during extended operation. Avoid touching the unit directly until it has cooled to prevent burns.
What best practices should be followed when operating the DJI AL2D Spotlight?
During high-altitude operations, ambient moisture and suspended particulate matter may cause light scatter, degrading camera contrast and washing out the live view. Enabling the electronic defogging function effectively mitigates this effect and optimizes image quality. To mitigate parasitic power draw and extend flight endurance, regulate brightness to the minimum required level and engage the spotlight only during active inspection tasks.
Can gimbal follow be disabled on the DJI AL2D Spotlight?
Operators can disengage gimbal follow within the payload settings interface. Upon deactivation, the spotlight maintains its static attitude; re-engaging the function causes the spotlight to automatically synchronize with the gimbal camera's line of sight. Following an aircraft reboot, gimbal follow will automatically revert to its default active state.
How do I update the firmware on the DJI AL2D Spotlight?
The DJI AL2D Spotlight firmware updates automatically alongside the aircraft system software. Use either method to proceed:
Run a one-click update from the Device Management page in DJI FlightHub 2.
Connect the aircraft to a computer and install the update via DJI Assistant 2 (Enterprise Series).
What precautions should be taken when transporting and storing the DJI AL2D Spotlight?
Physical shocks or sudden impacts can cause internal damage and operational failure. Handle the payload with care during installation, transportation, and daily use. DO NOT drop the product.
What is the ingress protection rating of the DJI AL2D Spotlight?
IP55.
What precautions should be observed when installing the DJI AP1 Parachute?
Mount the parachute onto the top accessory bracket of the aircraft and tighten all screws securely.
Ensure the aircraft is powered off before installing or connecting the parachute; never plug or unplug the unit while the power is on.
Fully seat the connector plug, tighten the connector screws properly without overtightening, and do not yank the cable to protect the waterproof seal.
Connect to the internet, follow the system prompts to activate the parachute, and update the firmware promptly if a new version is detected.
Can the DJI AP1 Parachute be deployed manually?
The system supports two manual parachute deployment methods:
Direct Manual Deployment: Operators can trigger parachute deployment directly within the DJI FlightHub 2 interface.
Flight Termination System (FTS) Deployment*: In jurisdictions requiring compliant termination procedures (such as EU member states and the United Kingdom), operators can access the Flight Termination System page in DJI FlightHub 2, input the aircraft serial number (SN) and verification code, and manually initiate flight termination to deploy the parachute.
*Parachute deployment via the Flight Termination System in DJI FlightHub 2 is supported in the following jurisdictions: all EU member states (Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, and Sweden), as well as the United Kingdom, Norway, Iceland, Switzerland, Liechtenstein, Serbia, and Georgia. To access the Flight Termination System page, visit the official DJI website.
When does the DJI AP1 Parachute deploy automatically?
The automatic deployment mechanism engages when integrated telemetry sensors (such as the IMUs within the aircraft or parachute unit) detect severe attitude deviations or abnormal flight speeds.*
DJI FlightHub 2 supports operator-defined Geocaging boundaries; any breach beyond this operational containment volume initiates automated parachute deployment.**
*Automatic deployment activates upon detecting abnormal aircraft attitude or speed. However, to prevent close-range impact damage to nearby equipment or property, auto-deployment is suppressed if the 3D infrared sensing system is operational and the aircraft is within 10 meters of the dock, regardless of attitude or velocity anomalies.
**Geocaging is supported in the following jurisdictions: all EU member states (Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, and Sweden), alongside the United Kingdom, Norway, Iceland, Switzerland, Liechtenstein, Serbia, and Georgia.
How often does the DJI AP1 Parachute require maintenance?
Inspect the parachute at least every six months (or more frequently under heavy use). During inspection, confirm that the connectors are secure, verify that the status indicator shows normal operation, and ensure the protective cover is firmly in place. Replace any abnormal or compromised components immediately.
Is the DJI AP1 Parachute reusable after it has been deployed?
The DJI AP1 Parachute is rated as a single-use safety apparatus and does not support field repacking or reuse; any deployment mandates full assembly replacement. To preserve safety integrity and ensure critical deployment reliability, the unit has a maximum operating lifecycle of three years from its initial activation date, after which retirement and hardware replacement are required, regardless of passing daily self-diagnostic tests.
Does installing the DJI AP1 Parachute affect the aircraft's obstacle sensing capabilities?
Installing the parachute causes the Matrice 5TD to automatically adjust its obstacle sensing, which reduces detection sensitivity for small obstacles above and behind the aircraft. Exercise caution and maintain visual monitoring of these areas during flight.
What new features are included in the latest DJI Enterprise app update?
Designed as a mobile extension of DJI FlightHub Web, the DJI Enterprise app merges the legacy Deployment and Debugging tools with DJI FlightHub Mobile into a unified platform. In addition to standard device commissioning and maintenance, the app provides real-time livestreaming, remote control, air-to-ground coordination (including map annotations and one-tap dispatch), task tracking, and instant push notifications.
Which SDKs are supported for development on the DJI Matrice 5TD?
DJI Matrice 5TD supports Payload SDK and Cloud API. For technical support, please contact us.
How do I access documentation and technical support for the DJI Matrice 5TD Intelligent Developer Program?
You can visit DJI's official Developer Platform website, or contact us for technical support.
