Air Paylod winch system for DJI M400

Payload Cargo delivery drop Release Winch system with 25M rope for DJI M400

SKU: RT-WD-M400 Category:

The DJI M400 payload cargo delivery drop release Winch system ,based on the DJI SDK protocol. It’s plug-and-play with instant system recognition. with 25M rope, max load 5Kg, With automatic spooling, intelligent end-stop protection, one-touch controls, and night operation indicators, it delivers a complete end-to-end solution for loading, lowering, and delivery. Ideal for inspection drops, emergency response, public security operations, and campus/park replenishment tasks.

Features:

  • Base on DJI SDK,fully compatible with DJI M400 (Matrice 400 ) drone, DJI Pilot 2 controls the drop and release.
  • Standard 25 m rope: A practical length covering mainstream drop radii, suited for long-reach and complex landing points.
  • High-speed hoisting: Approx. 0.6 m/s up/down speed to improve sortie efficiency while maintaining safety.
  • Automatic spooling with orderly winding: Smooth, tidy rope management to reduce tangles and jams for long-term stability.
  • Anti-reverse-tangle design: Structural and control optimizations significantly reduce reverse winding/tangling risks.
  • One-touch operation: One-touch descend and one-touch ascend for intuitive control and rapid onboarding.
  • One-touch rope cut : Emergency rope cut completes in about 2 seconds to quickly mitigate risk and shorten hover time.
  • Intelligent limit protection: Soft ascend at top; stop at top; auto-stop when rope is fully paid out to protect the mechanism and rope.
  • Ground-touch stop with auto-unhook: Automatically stops paying out when cargo touches the ground; auto-unhook on demand for faster, more consistent deliveries.
  • Load status indicator: Red slow flash = overload; Yellow slow flash = heavy load; Green slow flash = light load. Status is clear at a glance.
  • Night operation and visual control: Flashing navigation light indicates operating state; DJI Pilot 2 touchscreen UI shows clear status and actions.
  • Native protocol integration and unified design: Developed on the Matrice 400 RTK native protocol for instant recognition; Type‑C power/data interface for reliable connection and easy maintenance.

Application Scenarios

  • Emergency response: Rapid delivery in complex terrain, aerial drop.
  • Urban/campus O&M: Precise lowering of tools, spare parts, and consumables with fast turnaround.
  • Public security: Accurate, safe payload drops at night or in complex environments.
  • Special operations: Long-reach hoisting and delivery for hard-to-access areas such as bridges, mountains, and waterways.

Specs:

Category Item Details
Basic Specs Winch body size (with quick-release mount bracket) 173 × 134 × 142 mm
 Winch body weight 1260 g
Mechanical drop hooks 660 g
Rope length 25 m
Max payload 5 kg
Performance Rope ascent/descent speed 0.6 m/s
Motor speed 228 RPM
Power & Comms PSDK adapter module weight 144 g
PSDK adapter module size 173 × 134 × 142 mm
Power interface DJI E‑Port V2
DJI SDK / Protocol DJI Pilot
Real‑time Display Data shown in real time Device operating status;

electric drop hooks voltage;

lowered rope length; ascent/descent speed ; fixed length settings for lowering/ascending
Features Limit stops Upper and lower limit supported
Auto spooling Spool supports automatic lay winding
Auto unhook Auto‑release when cargo touches ground
Ground‑touch stop Automatically stops paying out when cargo touches ground
One‑touch delivery Supports one‑touch automatic delivery
One‑touch rope cut Emergency one‑touch rope cutting
Soft top approach Rope ascends slowly before reaching the top
Fault alarm Motor fault: indicator light fast‑flashing yellow
No‑load drop inhibit Descend command blocked when no load is detected to prevent free payout and reverse tangling

 

Weight 2 kg
Dimensions 15 × 22 × 23 cm