TENS Unit Leads - Electrotherapy Cords, Electrode Lead Wires & Adapters

From time to time, TENS unit lead wires, EMS unit cords, and ultrasound machine plugs and cords may require replacement to maintain efficient functionality. Having these essential supplies for your electrotherapy machines on hand can prevent interruption to your electrotherapy services and help keep your practice running smoothly. proudly offers a comprehensive selection of TENS leads, TENS wires, electrotherapy device cords, and plugs, as well as other accessories like adapters, connectors, sponges, and spare rechargeable batteries at the lowest prices guaranteed. Shop for lead wires and other electrotherapy supplies confidently with our flat rate shipping, exceptional service, and Price Match Guarantee.

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We want you to be 100% satisfied. Our aim is to provide you with quality products at an affordable price. If an item does not meet your expectations, we'll gladly refund your money within 30 days after purchase. In order to keep our prices the lowest possible, some exceptions apply, including a 20% restocking fee applied after 30 days and 30% restocking fee applied after 60 days, should the item be in a usable condition. Please see our [1]Returns section for detailed information.

If you find the same product for a lower price from any other company, we will refund/match the difference. Offer is valid for 30 days from the date of purchase. Valid on orders shipped within the continental United States. Cannot price match against auction sites. Pricing match is based on competitor complying with Manufacturer’s Minimum Advertised Price (MAP) Policy. If a product is listed below “MAP” we may not be able to match that price. Vendor that we price match must have product available to purchase and not on backorder.

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Cords, Plugs & Adapters


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I appreciate all the support over the last 2 years while setting up my new practice. I have had successful results with over 90-95% of my patients with disc injuries/ neck/ back pain in utilizing the DTS table as a stand alone treatment. I will be honest- it was a tough decision initially because of the financial investment/ commitment while I was starting practice. I am glad that I decided to integrate the DTS into my practice from the start because of the referrals and the wonderful response from my patients. Thanks again for all your help over the last 2 years and continued support.

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Cords, Plugs & Adapters

Cords, Plugs & Adapters


What are electrotherapy lead wires?

Electrotherapy lead wires connect the electrodes to the output channels of the TENS unit, hence their alternate names of TENS unit leads or TENS unit electrode wires. These e-stim lead wires deliver the electric impulses generated by the TENS unit to the skin area the electrode pads are attached to. For additional comfort and easy usage, opt for longer TENS unit wires that give you more room. Wireless electrodes are also available but they tend to be heavier and bulkier.

How many leads does a TENS unit have?

Most TENS units have one lead channel that splits into two electrotherapy lead wires: a black one called negative and a red one called positive. These attach to electrodes on one end and to the TENS unit on the other, forming an electrical circuit. The more channels a TENS unit has, the more electrodes it can run at once. For instance, a dual-channel TENS unit can use four electrodes at a time, while a 4-channel one can use up to eight. You can also use connector splitter leads to extend wires and double their number when you need to cover a larger area, but you might also need to increase the current intensity.

How do I hook up my TENS unit?

The first thing you need to do when setting up a TENS unit is to put in batteries or charge it according to the instructions it came with. You then connect the e-stim lead wires to the machine and to the electrodes and position the electrodes on the affected body area. Make sure the electrode pads are at least 1 inch apart, but not very far and certainly not on different limbs. After correctly positioning the electrodes, you have to set up the level of intensity. The patient shouldn't feel any discomfort and pain, only a tingling sensation.

Where do you put the lead on a TENS unit?

Electrotherapy lead wires have a bent end and a straight one. The bent end goes into the matching socket at the top of the TENS unit and you have to make sure it is pushed all the way in. You then take the straight end of the wire and push the red one into the little hole of an electrode and the black one into another electrode. Once again, make sure the wires are pushed in entirely, with no metal showing.

How long do lead wires last for a TENS unit?

While electrode pads last no longer than 5-6 months before needing a replacement, TENS unit electrode wires are more resilient and can last up to two years if properly cared for. To ensure they last as long as possible, always be careful when plugging the wire leads in and out of the machine and the electrodes. Never pull on the wire, hold it by the connector instead.

How long do TENS unit electrodes last?

Some TENS unit electrodes need to be replaced after 30 days of intense usage, but high-quality ones can last for 5 to 6 months if you take care of them. If you notice that they start to lose stickiness, just wipe them off with a damp cloth and apply conductivity gels and sprays. To make the most out of them, it is recommended that you store electrode pads in their bag in the refrigerator between uses.

Where can I buy TENS unit leads? offers a wide selection of TENS unit wires for most of the machine models you may use in your practice. We also have e-stim lead wires for EMS units, remote controls, ultrasound accessories, transport cart adaptors, electrotherapy sponges, as well as cords and plugs that are specially designed for electrotherapy devices.