Mobile fall-arrest device for rope. With its unique locking system, the ASAP sets the standard in fall protection for workers at height. In normal use, the device moves freely along the rope without any manual intervention and follows the user in all his/her movements. In the event of a shock load or sudden acceleration, the ASAP locks on the rope and stops the user. Depending on the intended use, the ASAP may also be combined with an ASAP’SORBER or ASAP’SORBER AXESS energy absorber to work at a distance from the rope.