Mar. 27, 2026
Newwing Launches DJI M350/M400-Compatible Drone Winch Systems for More Efficient Industry Operations
A practical look at two PSDK-based descent devices designed for safer, smarter, and more efficient aerial delivery and field operations.

As industrial drone applications continue to expand, operators need payload tools that are not only compatible with leading UAV platforms, but also reliable enough for demanding field work. Newwing's new compatible winch systems for DJI M350 and DJI M400 drones are built around that need.
These two descent devices are engineered to help teams lower and retrieve materials more efficiently, with functions such as intelligent speed regulation, cable winding, ground contact release, one-click cable cutting, and night navigation lighting. The result is a more controlled workflow that supports utility work, emergency response, logistics support, and other mission-critical operations.
Below, we introduce the two product configurations and their main parameters in detail.
The DJI M350 Easy-load Descent Device (PSDK Version) is designed for compatibility with M350 RTK and M300 RTK, using the DJI Payload SDK interface and Skyport V2 power supply. It offers a rated safe load of 3 kg and a standard 25 m cable length.
The DJI M400 Easy-Carry Descent Device (PSDK Version) is tailored for the DJI E-port V2 architecture and increases the maximum lifting weight to 5 kg, giving operators more flexibility for heavier carrying tasks.
Parameter Item | Specification / Function | Remarks |
Product Name | DJI M350 Easy-load Descent Device | Compatible with M350 RTK, M300 RTK |
Product Model | PSDK Version | DJI Payload SDK Interface |
Main Body Dimensions | 173×134×142 mm | Excluding cables and release hook |
Main Body Weight | 1.26 kg | Excluding release hook/counterweight |
Mechanical Release Hook + Counterweight | 660 g (Configuration I) | Ground contact release, mechanical unhooking |
Electrically Controlled Release Hook | 770 g (Configuration II) | Electrically controlled throwing, intelligent unhooking |
Power Supply Interface | Skyport V2 | Direct power supply from UAV |
Maximum Lifting Weight | 3 kg | Rated safe load |
Cable Length | 25 m | Standard configuration length |
Maximum Retraction and Release Speed | 0.6 m/s | Intelligent speed regulation range: 0.1–0.6 m/s |
Ground Contact Release | ✅ Supported | Automatic unhooking upon landing |
Cable Winding Specification | ✅ Supported | Anti-tangling, automatic cable arrangement |
Night Navigation Light | ✅ Supported | Warning for night operation |
One-click Cable Cutting | ✅ Supported | Emergency cut-off |
One-click Fixed-length Cable Lifting/Lowering | ✅ Supported | Fixed-height retraction and release |
Electrically Controlled Throwing | ✅ Supported | Remote/auto throwing |
Load-bearing Indication | ✅ Supported | Load status feedback |
Intelligent Speed Regulation | ✅ Supported | Stepless speed regulation from 0.1 to 0.6 m/s |
Anti-reverse Winding | ✅ Supported | Cable anti-tangling protection |
For M350-based missions, the system emphasizes stable operation, anti-tangling cable management, and flexible release modes. Whether the task calls for mechanical release or electrically controlled throwing, the device is built to reduce manual intervention and improve repeatability in the air.
The built-in load indication and intelligent speed control further support safer handling by giving operators clearer feedback during lifting, lowering, and recovery.

Specification Item | Details | Specification Item | Details |
Product Name | DJI M400 Easy-Carry Descent Device | Ground Touch Release Function | Supported |
Product Model | PSDK Version | Cable Winding Specification | Supported |
Main Body Dimensions | 173x134x142mm | Night Navigation Light | Supported |
Main Body Weight* | 1.26kg | One-Click Rope Cutting | Supported |
Mechanical Release Hook + Counterweight Weight | 660g (Configuration I) | One-Click Fixed-Length Rope Lifting | Supported |
Electric Release Hook Weight | 770g (Configuration II) | One-Click Fixed-Length Rope Lowering | Supported |
Power Supply Mode | DJI E-port V2 | Electric-Controlled Throwing | Supported |
Maximum Lifting Weight | 5 kg | Load Capacity Indication | Supported |
Cable Length | 25m | Intelligent Speed Regulation | Supported |
Maximum Winding/Unwinding Speed* | 0.6m/s | Anti-Reverse Winding | Supported |
Compared with the M350 version, the DJI M400 model is designed for a higher lifting weight of 5 kg, making it a stronger option for scenarios that require heavier payload handling while keeping the same core advantages of cable winding, fixed-length rope control, and intelligent speed regulation.
Its supported functions are focused on reducing operator workload and making each descent, lift, and release action more consistent in real-world use.
Efficiency in drone-based field operations is not just about speed. It also depends on precision, control, and the ability to reduce errors during repetitive tasks. Newwing's compatible winch systems support that goal in several ways:
· Intelligent speed regulation from 0.1 to 0.6 m/s helps operators adapt the descent speed to different work conditions.
· Cable winding and anti-reverse winding features help maintain orderly cable management and reduce tangling risks.
· Ground contact release enables automatic unhooking on landing, which can save time and simplify recovery.
· One-click cable cutting and fixed-length lifting/lowering provide fast emergency response and repeatable work cycles.
· Night navigation light support improves visibility during low-light or nighttime operations.
Together, these capabilities help teams work faster while keeping handling more controlled and predictable.
Because the systems are built for practical payload handling, they can support a wide range of industry operations where drones need to deliver, lower, retrieve, or transfer items in a controlled way.
Typical use cases may include power line work, emergency support, material delivery, inspection assistance, and other aerial mission workflows that benefit from reliable cable management and stable payload control.
Newwing focuses on practical UAV accessory solutions designed to match real working conditions. By offering two compatible descent device options for DJI M350 and DJI M400 platforms, Newwing gives operators a clearer path to choosing the right system for their payload and mission needs.
From the compact M350 version to the higher-load M400 version, both products are built around ease of use, safer operation, and better efficiency in daily work.

The launch of Newwing's DJI M350/M400-compatible drone winch systems reflects the growing demand for smarter payload handling in industrial UAV operations. With strong compatibility, multiple release modes, intelligent speed control, and cable management features, these descent devices help improve operational efficiency while supporting safer and more flexible workflows.
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