The innovative Opti-E Punchdown Tool is designed to optimize the force applied to the termination by way of electronics. The internal electronics, powered by a nine volt battery, are designed to let the technician know by both a 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 has no impact. It is a smooth, nonaggressive method of punching down reducing damage to sensitive circuitry. End result? A perfect termination every time. This type of design, referred to by some as the soft punch, also reduces the potential of repetitive stress injuries.