D4 Work/Rescue Descender
The D4 Work/Rescue Descender features a unique and innovative cam action that offers precise control at slow or fast speeds. The progressive cam works by one cam operating inside another cam. The D4 is double-stop device with an auto-lock function whenever the operator lets go of the handle.
The handle mechanism is designed to rotate through 360º making it easier and simpler for the user. The handle rotation is accompanied by audible clicks that help the user identify the correct position of the handle. The handle itself is made from aluminum rather than plastic and is coated in a specially paint that provides extra grip.
The D4 has a 529 lbs. (240kg) working load limit which means it is suitable for two-man rescue, without the need for the creation of extra friction.
Specifications:
• Compatible with rope diameter: 7/16” (10.5-11.5mm)
• Panic brake: Yes
• Number of persons: 2
• (WLL) Working Load Limit 529 lbs. (240 kg)
• ANSI compliant version
• Serial numbering
• Stainless Steel cam material
• Anodized finish
• Weight: 1.5 lbs.