Rapid Relief Electronic Pain Pad uses clinically proven, TENS Technology. TENS – stands for Transcutaneous Electrical Nerve Stimulation. A TENS device is able to provide relief by emitting a gentle electrical impulse through the skin that blocks the nerves from transmitting pain to the body’s pain center. TENS treatments have been used for several years by pain doctors and physical therapists to treat professional, serious and recreational athlete’s aches and pains. TENS devices were previously only available with a doctor’s prescription.