EN 353-2: When using connecting devices longer than 2 m, fall arrest devices are required. When used as intended, they prevent the formation of slack rope (sagging of the rope) due to excessive rope lengths. This fall arrest device can be retrofitted to the movable guides NW-No. 4000 385 075, 4000 385 076, 4000 385 077, 4000 385 078. These devices are used, for example, in high-bay warehouses on lattice masts. Multiple people can ascend or descend on the same guiding rope retroactively. Additional technical specifications: Application: for connecting devices, Standard: EN 353-2, Maximum lifespan/years: 4-6, Inspection required: yes.