DetailsCompex electrodes are used during muscle stimulation with Compex devices. The electrodes help connect the wires from the Compex muscle stimulator to your skin. They are the points where the pulses are transmitted to your motor nerves, and ultimately your muscle fibers. Two leads can be attached to each 2" x 4" snap electrode. For your Compex muscle stimulator, you may use 2" x 4" easy snap electrodes or you may use 2" x 2" electrodes, or a combination of both. A Compex electrode is coated with a strong medical-grade adhesive, developed to stick to your skin. Used in normal circumstances, a Compex electrode should last 15 to 20 sessions.