Australian Registered Medical Device

Same day dispatch

12-month warranty

Professionally endorsed

AU Registered Medical Device
12-month warranty
Same day dispatch
Professionally endorsed

TENS Unit Machine: What It Is and How to Use

A long and small wing iTENS and refill gel pads

A Transcutaneous Electrical Nerve Stimulation or TENS unit machine is a cutting-edge electronic device designed for pain management. It offers natural pain relief by delivering low-voltage electrical currents to the body. These pulses work in various ways to provide analgesia. Nevertheless, using a TENS unit is straightforward. Begin by cleaning and drying the skin. Place the electrode pads accordingly. Finally, turn on the device and start with a low setting. Use the device for 15 to 30 minutes.

Living with different types of pain is a challenging journey. It can be from various factors, from injuries to medical conditions. Thus, having a method of pain relief is crucial. Individuals typically take medications. However, these substances can have unwanted side effects. Fortunately, TENS therapy for pain relief offers a safe and effective solution. It is a widely popular tool in the medical field. This article will present the TENS machine, how it works, and how to use it.

What is a TENS Unit Machine?

A TENS unit machine is a pivotal device in the medical field. It is a technological advancement that sends electrical impulses to the nerve fibres. It streams the currents via electrode patches attached to the skin. Health professionals and physical therapists frequently recommend TENS devices. Its widespread endorsement underscores its reliability and effectiveness in clinical and home settings.

TENS devices come in two main types: wired and wireless. Wired versions connect the electrode pads to the central machine through physical wires. It offers reliable performance but may limit mobility. Meanwhile, wireless TENS units afford users greater freedom of movement. It eliminates the need for lead cables. Both types serve the same fundamental purpose but cater to different user preferences.

Furthermore, the TENS machines offer a variety of features. Most TENS units have adjustable pulses. It allows users to control the pulse rate, amplitude, and duration. Additionally, these devices boast variable modes catering to different pain relief needs. It may include modulation or burst modes. Moreover, modern TENS units have digital displays and rechargeable batteries.

Treatable Conditions

  • Acute Pain: Arises suddenly and for a short period of time. It is a discomfort that stems from labour pain, menstrual cramps, injuries, and tension headaches.
  • Chronic Pain Conditions: Persistent and lasts for months or even years. It may include neck pain, backaches, arthritis, and fibromyalgia.
  • Musculoskeletal Pain: Affects the bones, muscles, and joints. Conditions such as joint pain, knee osteoarthritis pain, and tendinitis can benefit from TENS.
  • Neuropathic Pain: Complex condition arising from nerve damage. It may involve conditions like sciatica and diabetic neuropathy.
  • Muscular Pain: Results from overuse, tension, or stress. TENS therapy can reduce spasms, relax muscles, and prevent soreness.

A woman using iTENS on her lower back

How a TENS Unit Machine Works

Foremost, the TENS unit machine employs the Pain Gate Theory. It posits that the nervous system can only carry limited information to the brain. The electrical pulses can effectively “crowd out” the pain messages travelling to the brain. Essentially, it distracts the nervous system, preventing pain signals from being fully perceived. As a result, it can diminish or reduce the perception of discomfort.

Secondly, the TENS device triggers the release of endorphins. Endorphins are the natural pain relievers of the body, often referred to as “feel-good” hormones. The electrical stimulation encourages the body to produce more of these hormones. As endorphin levels increase, they bind to specific receptors in the brain and spinal cord. It leads to a decreased sensation of pain and a sense of well-being.

In addition, the TENS unit enhances blood circulation to the treated area. Increased flow is beneficial as it helps remove pain-causing chemicals accumulated in the tissues. Moreover, better circulation delivers more oxygen and nutrients to painful areas. It promotes healing and reduces inflammation. Nevertheless, this improved circulation can lead to quicker recovery times and aids pain management.

Benefits of TENS Treatment

First, TENS treatment is natural. It does not require surgical procedures, injections, or intake of medications. Instead, TENS taps into the innate mechanisms of the body for managing discomfort. Secondly, TENS therapy is customisable. Users can adjust the settings of the electric currents. They can finely tune the settings to provide optimal relief.

Thirdly, TENS treatment is cost-effective. Once purchased, the device can be used repeatedly. It eliminates the ongoing costs of medications or frequent visits to medical professionals. Additionally, TENS units are portable. They are compact and lightweight so that they can be easily transported and used anywhere.

A guide on how to use the iTENS app

How to Use a TENS Unit Machine

Using a TENS unit machine effectively involves a simple step process. Initially, the user selects the area of treatment. Ensure the skin is clean and dry to enhance conductivity and avoid skin irritation. Accordingly, attach the electrode pads to the skin. Users can place the pads directly or surrounding the painful area. Nevertheless, adhering to the proper electrode placement is crucial for effective therapy.

Next, turn on the TENS unit, starting with a low setting. Gradually increase the intensity level until a buzzing or tingling sensation is felt. However, the sensation should not cause discomfort. Find the right balance that provides relief without discomfort. Additionally, some advanced TENS models have pre-set programs for different types of pain. Thus, choose the program that directly targets the area of concern.

During the session, users can continue with their daily activities or rest. The therapy can last from 15 to 30 minutes. After the session, turn off the TENS device and carefully remove the electrode patches from the skin. Adhere to the guidelines of the manufacturer for cleaning and storage. Finally, maintenance is critical for prolonging the life of the unit.

Safety Precautions

Foremost, users should consult a healthcare professional before starting a treatment with a TENS unit. It is particularly essential for individuals with existing health conditions or who are pregnant. Secondly, users should avoid placing the electrodes on some regions of the body. Do not position the pads on the head, eyes, mouth, throat, chest, spinal cord, bony prominences, and broken skin.

Additionally, ensure the device is off before placing or removing electrode pads. It helps to prevent unexpected electrical shocks. Lastly, users should avoid using the TENS unit while driving or operating heavy machinery. The sensation produced by the machine could be distracting.


In summary, a TENS unit machine can provide a safe and effective way to manage discomfort. It is an advancement in the medical field that delivers electrical pulses to the body via electrodes placed on the skin. It is available in wired and wireless models and is recommended by professionals. Nevertheless, TENS therapy works by blocking the transmission of pain signals and prompting the release of endorphins. It also enhances blood circulation, promoting healing and reducing inflammation.

Furthermore, TENS therapy presents benefits. It is natural, customisable, and cost-effective. The TENS devices are also portable. They are lightweight and compact, which can be easily carried. Moreover, TENS can treat various conditions. It can manage menstrual cramps, arthritis, tendinitis, sciatica, and muscle tension. TENS units are also easy to use. Place the electrodes, turn on the device, and modify the settings. However, knowing the safety precautions can optimise the TENS therapy experience.

Best Sellers

Shopping Cart
Your cart is emptyReturn to Shop
Calculate Shipping

We have detected you are from the United States

We ship to all locations within the United States.
Prices will be automatically converted into USD.

Would you like to add extra Gel Pads?

Would you like to add extra Gel Pads?

Would you like to add extra Gel Pads?


The item you’re adding to your cart doesn’t have any gel pads.

Note: iTENS wings should always be used with a gel pad.