Intelect IFC Portable UnitIntelect IFC Portable Unit For symptomatic relief and management of chronic pain and acute post surgical or post trauma pain. By producing a high frequency carrier waveform that penetrates the skin more deeply than a regular TENS unit, the IFC unit typically has less user discomfort for a given level of stimulation. The Intelect IFC Portable Unit Includes lead wires, 9 volt battery, Dura Stick Self Adhesive Electrodes and a convenient carrying case.