ISC D4 Pro
Feedback gathered from highly qualified and experienced 'Pro' users highlighted a demand for a device which does not incorporate a panic-brake function. Enter the D4PRO! The D4PRO Descender is the same great Work/Rescue Descender, but without the panic brake.
This can be particularly useful on longer descents and in rescue/belay applications, where a broader 'sweet spot' is welcomed.
Features & Benefits
- 360° handle rotation
- Suitable for 2-man rescue
- No Plastic in handle!
- Clear handle positions
- Simplified operation
- 5 kN slip load
- Max user weight 529 lb (240kg)
Specifications
- Manufacturer : ISC
- Made in : Wales
- Minimum rope diameter: 10.5mm (3/8")
- Maximum rope diameter: 11.5mm (7/16")
- Working Load Limit: 240 kg (529 lb)
- Construction: Aluminum body & handle, stainless steel cam
- Weight: 676 g/ 24 oz
Standards
- EN12841
- NFPA 1983
NOTE: As the D4PRO does not incorporate a panic-brake, it is not possible for the device to fully meet the criteria of ANSI Standards. The D4PRO is fully certified to EN 12841 (a panic brake is not a compulsory criteria of this standard).
If you require a Descender which fully meets ANSI standards, please see RP880 D4 Work/Rescue Descender, (with incorporated panic-brake).
Notes Rated load 240kg (550lb). This rating is achieve WITHOUT the need to add additional friction to the system.
Ratings & Reviews
2 reviews
Great device
by Micah -
The best rescue device/descender I have used
I love my D4!
by Eric Forsman
If you practice a lot of pick-off rescues on SRS, you can't beat a D4. It is built solid as a rock, and the large cam is far smoother and better at dissipating heat than the Petzl RIG. And, unlike the RIG, the D4 can accept 2 carabiners in the eye, which is really important for rescues. The one disadvantage of both the D4 and RIG is that on really long descents (>100m) you need to feed the rope through the device, because the weight of the rope hanging below the device will keep it from feeding. For tree climbers that is rarely an issue.