What are the available cable length options?

Standard equipment includes 110m cable, with an optional 55m cable length available.

Rosefinch Small Size Tether Power System Adapted to Dji M300/350rtk Cable 110m Support Building Cleaning

Name: Rosefinch Small Size Tether Power System Adapted to Dji M300/350rtk Cable 110m Support Building Cleaning
Brand: Nanjing Rosefinch Technology Co., Ltd
SKU: 2247374065

Jiangsu, ChinaNanjing Rosefinch Technology Co., Ltd

US$7,599.00

1-4 Pieces

US$7,469.00

5+ Pieces

Product profile

Customization

Available

Supporting Flight Duration

≥ 24h

Cable Length

55m 110m

Ground Module Input Voltage

190-240VAC Wide Range Input

Ground Module Output Voltage

700~750VDC Adjustable

Ground Module Output Power

3500W (Rated Long-Term Output)

Ground Module Weight

12.5 ± 0.2kg

Air Module Input Voltage

580~810VDC Wide Range Input

Air Module Output Voltage

50.5 ± 0.5VDC

Air Module Output Power

2000W (Rated Long-Term Output)

Air Module Weight

765 ± 10g

Transport Package

Plastic Hard Case

Specification

720× 570× 380± 5mm

Trademark

Rosefinch

Origin

Nanjing, China

Production Capacity

1000/Year

Key features

Extended Flight Duration: Supports continuous flight for 24 hours or more with stable power supply.

Fully Automated Operation: Intelligent winch system automatically reels in/out cables during takeoff and landing.

Battery Protection Technology: Constant voltage output prevents battery charging/discharging, preserving lifespan.

Compact and Lightweight Design: Air module weighs only 765g; ground module is backpack-friendly for easy portability.

Multi-Mode Communication: Supports USB Type-C, RJ45, Bluetooth 5.0, and optional fiber optic transmission.

High Safety Standards: Features IP55 waterproof rating, 3000VDC isolation, and multiple electrical protections.

Emergency Power Backup: Built-in backup battery ensures automatic cable retraction during sudden power outages.

Real-Time Monitoring: 4.3-inch touchscreen displays voltage, current, temperature, and fault logs in real time.

Company profile

Nanjing Rosefinch Technology Co., Ltd

Jiangsu, China

Business Type: Manufacturer/FactoryAverage Response Time: ≤6.02h

AI-Powered supplier vetting

SummaryThe supplier is identified as a trading company with business activities covering technology services, unmanned aerial vehicle sales, electrical and electronic equipment, software, security and fire equipment, and import/export. It holds ISO 9001 and ISO 14001 certifications and reports ODM and OEM capabilities, including products designed for several DJI drone platforms. Customization is offered from designs and samples, with full, minor, and flexible customization options. Production information indicates tether power system output of 500 pieces, while the supplier reports fewer than five quality-control staff and six to ten years of R&D engineer experience. Service procedures exist for corrective actions and customer complaints, but quality assurance status is unknown. The supplier lacks overseas showrooms, overseas agents or branches, and offline trade-show participation. Financial records are referenced for 2020–2022, but no performance values are provided, so financial credibility cannot be determined.

Supplier typeThe supplier is explicitly classified as a trading company. Its stated scope also includes technology services, equipment and electronic-product sales, software, and import/export activities, indicating a broad commercial and technical business profile rather than a clearly identified manufacturing-only entity.

CertificationsThe supplier reports holding ISO 9001 and ISO 14001 certifications. These are explicit management-system certifications and provide positive evidence for quality and environmental management, although no certification validity dates or scope details are supplied.

After-Sales capabilityThe supplier has documented procedures and records for corrective and preventive actions and customer complaints, and reports lead times within 15 working days in both peak and off-season periods. However, it has no overseas showroom, overseas agent or branch, or offline trade-show participation, and its service-capability assessment procedure lacks a written procedure, limiting evidence of broad overseas support.

R&D capabilityThe supplier explicitly offers ODM services and OEM services for popular brands, reports six to ten years of total R&D engineer experience, and lists tether-station products for multiple DJI platforms. It does not have an available SDK, so innovation capability is supported for product customization and development but not for SDK-based integration.

Production capacityThe supplier reports annual productivity of 500 tether power system pieces and describes products covering multiple tether-station capacities and drone platforms. It also reports fewer than five quality-control staff, while the supplied slices do not establish broader production scale, facility capacity, or manufacturing ownership.

Customization capabilityThe supplier explicitly supports customization from designs, customization from samples, full customization, minor customization, and flexible customization, and also offers ODM services. These statements provide direct evidence of substantial design and customization capability.

Product Q&A

Q:Does the system protect the drone's battery from damage?

Yes, the constant voltage output avoids ineffective charging and discharging, protecting battery lifespan and maintaining a fully charged standby state.

Q:Is the cable operation manual or automatic?

It features an intelligent winch system that automatically follows the drone's takeoff and landing, requiring no manual operation.

Q:What communication methods are available?

It supports USB Type-C, RJ45 wired communication, Bluetooth 5.0 wireless connection, and optional fiber optic wired communication.

Q:What safety protections are included?

The system includes input overvoltage/undervoltage, output overcurrent/short circuit protection, and 3000VDC isolation voltage withstand standard.

Q:What happens if there is a power outage?

The built-in backup power supply automatically switches to backup mode to complete emergency wire retraction and avoid cable entanglement.