Big Dipper Multi-Function Descender

Lightweight Smooth Multi-Scenario | Protecting Every Descent

More Than a Descender — A Complete Rope Access Tool

The Big Dipper Multi-Function Descender is a high-performance personal protective equipment (PPE) device developed by Xinda for professional high-altitude work, rescue operations, and outdoor sports. It integrates descent, protection, work positioning, area restriction, adjustable anchoring, and more — one device, multiple scenarios.It comes in two versions: one has a handle that allows for slow descent when pressed and automatically locks when released, making it intuitive to use. The other version has no handle and requires a wrench for operation, ensuring safety and reliability by preventing accidental contact.

Four Core Advantages

Bearing-Equipped Design for Higher Efficiency

Built-in copper roller and graphene sliding structure ensure smooth rope travel — effortless operation with no sticking.

Lightweight & Compact — Easy to Carry

The small descender weighs only 210g, and the large version just 250g. Easily fits into any climbing backpack or tool kit.

304 Stainless Steel — Strong & Durable

Made of high-strength stainless steel, wear-resistant and corrosion-resistant, suitable for demanding work environments.

Easy to Install & Smooth to Use

Simple structure with quick rope installation using a hex wrench — ready to use in moments.

For the best experience, we recommend:

Smooth version paired with 10.5mm diameter static rope for exceptionally smooth sliding

Test data:Continuous sliding under 4kN tensile load — no damage to the rope

Always connect to your harness using a small-radius O-type carabiner

Real-World Applications: More Than Just Descent—A Versatile Workstation

The Big Dipper Multi-Function Descender is not merely a machine designed to “go down.” By using different rope configurations, it can perform a variety of functions:

High-Altitude Work and Positioning: When used with an O-ring carabiner, it serves as a work positioning anchor, allowing air conditioning installers or electrical maintenance technicians to keep both hands free while working on the exterior of a building.

Heavy-Load Lowering: Its precision-engineered tooth design allows operators to fine-tune friction, enabling the smooth and controlled descent of heavy loads to the ground and preventing the impact of free-fall.

Lifting System Component: In rescue scenarios, it is often used to construct pulley lifting systems, serving as the control hub at the “lowering end” to achieve “one tool, multiple uses.”

Certified Quality

The Big Dipper Multi-Function Descender series meets both international and domestic safety standards:

CE 1019 EN 15151-1 (EU mountaineering equipment standard for descenders/belay devices)

XF494-2023 (China fire industry national standard)

Key Performance Specifications

Model No.: HH-9776
Material: High-Strength 304 Stainless Steel
Standard: CE1019 EN15151-1 / XF-494-2004
Applicable Rope Diameter & Sliding Load:
• Small 10.5mm (Sliding load 8kN)
• Large 12mm (Sliding load 15kN)
Weight (Descender):
• Small 10.5mm: 210g
• Large 12mm: 250g
Weight ( Anchor):
• Small 10.5mm: 125g
• Large 12mm: 170g
Applications: Mountaineering, caving, rock climbing, tree climbing, development training, rescue, high-altitude work, fall protection, rappelling, and more.

Conclusion

The Big Dipper Multi-Function Descender, with its lightweight design, high efficiency, and exceptional durability, combined with rigorous safety engineering and certified standards, provides reliable protection for high-altitude work and extreme sports. Whether you are a professional rescuer, a rock climbing enthusiast, or a high-altitude worker, you can enjoy a safe and smooth operating experience. Be sure to fully understand the instruction manual, receive professional training, and always prioritize safety before use.

Reminder

Xinda reminds you: High-altitude work and extreme sports involve inherent risks. Before using this product, be sure to read and understand the complete instruction manual, receive professional training, and take full responsibility for your own safety.


User Manual
Certification