The SWING is a mobile fall arrester with smooth rope friendly cams, designed to be used as the main fall arrest device or as a rope access back-up device, it can be placed or removed of the rope at any point, the cam allows to park the device on the rope. It can be associated with the SWING LANYARD length 20/40cm to work away from the rope and can be released when loaded. The use in Rescue situation is also possible.