The PED5 is used for confined space or work and rescue tasks. The device can work with a bosuns chair, harness, rescue sling and attached to either portable anchorages such as tripods, davits or a fixed structure. The kernmantle rope runs through a top and bottom pulley and the user can either ascend or descend independently of any other person. Control is maintained by the ascender, which can be either right or left handed (Right handed standard - Left handed must be specified at the time of order). In rescue, or as an assist, another person can help raise or lower the user with an ascender, independent of the person in the chair or harness.