It is a transcutaneous electrical nerve stimulation (TENS) machine is used as an alternative to painkilling medication. A TENS machine is a device in which small electrical pulses are transmitted to the body, like little electric shocks. This can help to ease pain in some people with certain types of pain by releasing Endorphins Hormones (Natural Pain killers). The advantage is that TENS is well tolerated and largely without side-effects.
A Four Channeled TENS Therapy Unit having 6 different Modules at 6 different frequencies