The standard D5TM Work/Rescue Descender (RP885) has proven to be a popular Descender for the North American Fire & Rescue and Tower Climbing markets, which typically use 1/2" ropes.
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 D5PRO! The D5PRO 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.
As the D5PRO does not incorporate a panic-brake, it is not possible for the device to fully meet the criteria of NFPA and ANSI Standards. The D5PRO 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 NFPA/ANSI standards, please see RP885 D5 Work/Rescue Descender, (with incorporated panic-brake).