The Platinum Tools 13120 Opti-E Punchdown Tool is designed to optimize the force applied to the termination by way of electronics. The internal electronics, powered by a 9 V battery, is designed to let the technician know by both an LED and a beep tone that the selected set force has been reached. The force is selected by turning the force selector wheel on the front of the tool. The Opti-E Punchdown Tool has no impact. It is a smooth, non-aggressive method of punching down reducing damage to sensitive circuitry. This type of design is referred by some as the soft punch, as it reduces the potential of repetitive stress injuries.