What are the benefits of a TENS unit? If you are looking for a drug-free means of pain management, then the TENS unit is your best bet. TENS therapy has been trusted by medical professionals all around the World. The TENS devices have been popular and used by patients for over 30 years. The TENS unit releases electrical pulses that move from the skin surface to the underlying nerves. These electrical pulses help block the pain signal from reaching the brain and thus reduces the sensation of pain. This is an ideal solution for satisfactory pain relief. Do I need a Fully Isolated Dual Channel TENS Unit? If you plan to manage pain at 2 different body parts simultaneously, then you need a dual channel TENS unit. The fully isolated dual channel TENS machine enables you to massage at 2 different pain points at the same time. For instance, you can operate the device at “Acupuncture” mode in Channel A at the intensity level 5 and can choose “Tapping” mode in Channel B wit