How to Compare Tens Units

TENS, or Transcutaneous electrical nerve stimulation, uses a low voltage of electricity to keep pain signals from reaching the brain. The electrical stimulation occurs through electrodes which are hooked into the Tens unit. Tens units are available over the counter and can be purchased without a prescription from a doctor. It may seem like a daunting task to compare the units, but with the right knowledge, you can choose the Tens unit that is right for you.

Instructions

• 1

  Speak with your doctor or physical therapist to find out which features you will need with your tens unit. Some units come with multiple time setting abilities that may not be required for general home use. Avoid purchasing a machine that is commonly used in a clinical setting, since they are often more expensive and will have features that you don't need.

• 2

  Look for a unit that offers a long battery life. Batteries typically run down quickly in a tens unit, so try to find one that either has a long battery life or uses rechargeable batteries.

• 3

  Check the units to determine if you will have any problems turning the knobs. If you have arthritis, you may have trouble operating buttons or knobs that are very small.

• 4

  Look for a tens unit that offers adjustable width control. This will allow you to control how long the machine stays on and the level of your pain relief.

• 5

  Check to see if the tens unit has a warranty. Since they are electrical appliances, many of them do come with various warranties which offer repairs or replacement parts.

• 6

  Ask for a trial use period. Many companies allow customers to try the tens unit at home for a short amount of time before you purchase it. If you cannot get a free trial, make sure that you understand the return policy before purchasing your unit.