SIR DESCENDER ANSI Z359.4

A robust multipurpose device for use in industrial rope access applications. Its functionality spans the range from rope descender and abseiling device to semiautomatic belay device to work positioning device for use on roofs and edges. By pulling on the working end of the rope the cam engages and locks the rope. By pulling the lever the cam gradually releases the rope. If the lever is pulled down to its terminal position the anti-panic function is triggered which locks the rope. Easy and intuitive installation of the device onto the rope. No hidden mechanisms for easy inspection.

• EN 12841-C: max. load 225 kg, with static rope 10-12 mm
• EN 341-A: load range 30-180 kg (max. descent distance 190 m), with Singing Rock 11 mm static rope
• EN 795-B: for one person, exclusively with Lanyard WP
• ANSI/ASSE Z359.4-2013: single person use (59-141 kg, 130-310 lb) with static rope 11 mm