Omron PM3030 Electrotherapy Pain Relief is a simple, drug-free solution for pain relief. This is a natural alternative you can use without a prescription. Omron electrotherapy pain relief uses TENS technology, which blocks the pain message, triggers endorphins and enhances blood circulation of the area. The eletctrotherapy delivers gentle, massage-like pulses that provide pain relief on the spot. It can be used to relieve aches or pains in stiff muscles like in the back or shoulders or joint pains in the knees and elbows. With Omron electrotherapy pads, you can personalize your pain management.