Transcutaneous Electrical Nerve Stimulation (TENS) is a non-invasive, drug-free approach to pain management commonly used for chronic pain, joint pain and muscle cramps. A traditional TENS device comprises of a compact box and a battery-operated stimulator and two sets of electrodes with connected leads. iTENS on the other hand, is a wireless TENS device which you can connect to your mobile phone directly via Bluetooth. 

A TENS device generally employs adhesive electrodes attached to the skin’s surface to deliver direct electrical current stimulation that you can adjust in terms of frequency, degree and duration. iTENS is a contemporary electrotherapy device that combines innovation with the proven effects of “TENS therapy” to deliver effective and long-lasting pain management through your Android or Apple smartphones and can also be used manually. 

The Medical Importance of a TENS Device

Pain treatment using a TENS device can be classified between low or high frequency. Low frequency is regularly characterized as 10 Hz or below, whereas high frequency tends to be at the 50 to 100 Hz or even higher. Low frequencies cause the body to produce chemicals and endorphins into the body, which will make people feel less pain. High frequencies disguises pain to transmit electrical impulses through the spine, this is also called pain gating. The person will notice a reflexive kind of muscle movement when the stimulation increased, which also benefits muscle re-education and restoration of muscle and tissue disorders. 

Two Ways a TENS Device can Control Pain

Sensory Level Stimulation  According to the Gate Control Pain Theory, the electromagnetic pulse of the TENS device conflicts with the passage of pain signals by inhibiting the “neural gate” by which pain flows. 

Motor Level Stimulation – The objective of motor level stimulation is to stimulate the body’s natural painkillers to relieve pain. It is also most often used by therapists to aid in muscle-activation rhythms. 


Many healthcare experts use a TENS device for pain management, and most of them will also instruct you on how to perform the treatment yourself. With the wireless iTENS device you can do so with the added ease of going through your daily routine without any hassle. 


For more info, visit our Further Education page.


Make sure you follow the iTENS instructions that come with your TENS device (they are also stored in the app). But in general, follow these directions for use:

  1. Use rubbing alcohol to clean the area where you want to apply the pads. Let your skin dry, and make sure there are no cuts, grazes or irritations on the area.
  2. Place the 2 x silver electrode areas of the wing on either side of the pain area.
  3. Choose either body part, condition or create your own program to determine which program the device will run on.
  4. Switch on the TENS device using your fingernail and slowly turn it up until you feel a tingling sensation. It should feel quite strong but not uncomfortable. The sensation will drop slightly after a few minutes – this is called accommodation – and when this happens, turn the machine up a little and then leave it at that setting for the rest of your session. Please don’t turn it up too high, as this can over-stimulate the area and make your pain worse. There should be no muscle contractions at any point while you are using your
  5. At the end of the session, turn the device off using your fingernail and disconnect the wing by pulling it away from the middle section. Try not to touch the gel with your fingers, as they will wear out faster. Clean your skin with mild soap and water. If you find any redness or irritation from the electrodes, you should use a different skin area the next time you use your device.
© Tens Australia - Web Design Australia - Do not rely upon upon this website for medical information. TENS machines are intended for use after medical diagnosis, as part of a pain management plan or an injury recovery program.