The D4 Work/Rescue Descender features a unique and innovative cam action, which offers precise control at slow or fast speeds. The progressive cam works by way of one cam operating inside another cam.

• CE Certification: Testing performed by an independent lab to ensure the product meets the appropriate specification.
• Certification: Certified to ANSI Z359.4 – Safety Requirements for Assisted-Rescue and Self-Rescue Systems, Subsystems and Components
• Certification: Certified to EN 12841C – Personal Fall Protection Equipment – Rope Adjustment Devices – Descenders
• Certification: Certified to EN 341 – Personal Fall Protection Equipment – Descenders

The D4 has a 240kg (500lbs) Working load limit which means it is suitable for two-man rescue, without the need for the creation of extra friction.

The handle mechanism is designed to rotate through 360º making its use easier and simpler. The handle itself is made from aluminium rather than plastic and is coated in a specially chosen paint which provides extra grip. Cleverly, the handle rotation is accompanied by audible clicks which help the user identify the correct position of the handle.

• Height: 140mm
• Width: 82mm
• Thickness: 98mm
• Weight: 655grams
• Compatible with rope diameter: 10.5-11.5mm (7/16″)
• Panic brake: Yes
• Number of persons: 2
• Body material: Aluminium
• Cam material: Stainless Steel
• Body finish: Anodised
• (MBS) Minimum Breaking Strength: 16kN (3597 lbf)
• Slip Load: 5kN
• Max User Weight: 240kg (500lbs)
• Approved Standards: EN12841, ANSI Z359, NFPA 1983- meets the requirements of EN341