How many uses can I get from the pads?

An average user will get approximately 10-15 uses per pack of the electrodes included with the Twin Stim III, depending on how frequently they are used and for how long, as well as the user's skin type. Once the adhesive gel wears off, you can simply discard the electrodes and begin with a new pack of pads, but note that each unit comes standard with only one pack of four individual electrodes.

Are you able to customize/change the TENS and EMS settings to your own preferences?

YES! The Twin Stim III has 4 different adjustable modes for TENS, and 3 different adjustable modes for EMS, that can each be set to your own preference.

Is this device FDA approved?

Yes, the InTENSity Twin Stim III is FDA 510K-approved.

Are you able to use the EMS and TENS modes at the same time with this unit? Or is it one mode or the other and you can only switch between the two modes?

The Twin Stim III only allows a user to run a TENS therapy treatment, OR EMS, at one time, not both simultaneously. You can only switch from one or the other.

Can you use the AC adapter with a normal battery in the unit at the same time? Will it drain the battery while using the AC adapter?

Yes, you can use the unit with the AC Adapter, while a battery is inside the device as well. If plugged in, the AC Adapter will simply bypass the battery and power the device that way.

I travel overseas a lot. Is the unit/AC adaptor dual voltage so that it can be used overseas at 220v?

Yes! The AC Adapter for our InTENSity devices are 120v/240v, so they may indeed be used overseas with a 220v outlet.

What unit and accessories should I get for Tennis Elbow? What size pads, etc.?

Unfortunately, since we do not staff doctors here, we can not suggest specific electrotherapy treatments. We highly recommend first consulting with a doctor/medical professional about your particular case, and if they recommend an electrotherapy treatment for you, such as TENS, EMS, Interferential, Russian Stim, etc., then we can certainly better assist in helping you select the right device for your needs.

Can this unit be used on the face for TMJ?

It is generally not recommended to use an electrotherapy treatment on the face, but please always consult with a doctor/medical professional prior to considering such a treatment, to see if it is right for you. For TMJ, you may also want to ask specifically about Microcurrent vs. TENS vs. EMS.

Does this unit come with electro sticky pads?

Yes, every electrotherapy device we carry comes standard with a pack of 4 electrodes inside of the carrying case to get you started. You can refer to the Product Description on this page to see all items/accessories that come included in each package. We always recommend that you consider stocking up though whenever purchasing a new unit since the electrodes will be the #1 thing you will ever have to replace in time.

Is this unit recommended for wrist and finger extension post stroke?

We recommend first consulting with a doctor/trained medical professional to see if an electrotherapy treatment such as TENS or EMS would be a good fit for your particular case. If so, then all we can do is help provide more technical sort of information as it relates to our items. Feel free to browse our selection, and if you have any specific questions, you can always give us a call or send us an email and we will be happy to assist further in any way we can.

EMS stands for Electrical Muscle Stimulation. You should always consult with a doctor/medical professional first to see if an electrotherapy treatment, such as EMS, is right for you.

Does this unit have a belt clip on the back?

Yes, each unit comes standard with a removable belt clip attached.

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Home > TENS & Electrotherapy > InTENSity Devices > InTENSity Twin Stim III Digital TENS & EMS Combo Unit + Free AC Adapter Included

Each package includes everything needed to begin therapy right away!

InTENSity Twin Stim III Digital TENS & EMS Combo Unit + Free AC Adapter Included

Part Number:

DI3717

Availability:

In Stock

On sale: $44.95

149 Review(s)

Instruction Manual:Click Here
Quick Start Guide:Click Here
New Model Available:Click Here

Questions about this item? Ask here.

(See 25 Questions)

Quantity

Quantity Discount Pricing

Quantity
Price
6 - 31
$41.95
32 - 63
$39.95
64 - 95
$37.95
96+
$34.95

Description
Customer Reviews
Questions and Answers

The InTENSity Twin Stim™ III is a portable electrotherapy device featuring two therapeutic modes: TENS & EMS therapy, which are used for pain relief and muscle stimulation. The unit is among the upper echelon of pain relief devices, with a maximum output of 105mA, and it also comes standard with an AC Adapter and removable belt clip for easy, at-home use and convenience.

Relieve your pain by using the TENS Mode.

TENS is a non-invasive, drug free method to control your pain by sending tiny electrical impulses through the skin. In many cases, this stimulation will greatly reduce or eliminate pain.

Strengthen your muscles by using the EMS Mode.

EMS is widely used in hospitals and sports clinics to treat muscle injuries, to re-educate paralyzed muscles, and to prevent atrophy in affected muscles.

Product Features & Specifications:

Simple-to-operate, portable electrotherapy device for pain management
Unit combines TENS & EMS therapy for optimal treatment
Channels: Dual Channel
Pulse Amplitude: Adjustable, 0-105 mA
Voltage: Constant Current, 100-240V (AC Adapter)
Pulse Rate: Adjustable, from 1 to 150 Hz
Pulse Width: Adjustable, from 50 to 300 microseconds, 10µS/step
Wave Form:

TENS: Mono-phasic Square Pulse
EMS: Mono-phasic Square Pulse

Power Source: 1x 9-volt Battery, or Free A/C Power Adapter included for home use.
Timer: Adjustable in 1-minute increments between 1 and 60 minutes or Continuous. Treatment time counts down automatically.
Dimensions: 4.5" x 2.55" x 0.9"
Weight: 0.28 lb with battery
1 Year Manufacturer Warranty
Package includes everything needed to start using the device right away:

Twin Stim III unit
45" Lead Wires
1x package of 4x high quality Self-Adhesive Electrodes
1x 9V Battery
A/C Power Adapter
Hard Plastic Carrying Case
Instruction Booklet

Electrotherapy Programs:

4 TENS Modes:

Burst

Burst Rate adjustable from 0.5 - 5Hz, pulse width from 50-300µS, frequency fixed at 10Hz

Normal

Continuous stimulation with adjustable pulse rate & width

Pulse Width Modulation Mode (Modulation 1)

Pulse width decreases to 60% in one cycle, and increases back to original value in following cycle.
Pulse rate, pulse width, and cycle time are adjustable.

Pulse Rate Modulation Mode (Modulation 2)

Pulse Rate decreases to 60% in one cycle, and increases back to original value in following cycle.
Pulse rate, pulse width, and cycle time are adjustable.

EMS Mode Specs

Ramp Time:

Adjustable from 1-6 seconds.
Determines the time to reach set output level from zero, and from set output level to zero.

On / Off Time:

On time controls contraction time, adjustable from 1-60 seconds.
Off time controls relaxation time, adjustable from 0-60 seconds.
3 EMS Modes:

Synchronous (S)

Synchronized stimulation of 2 channels.
Ramp duration, ramp up, ramp down, pulse rate, & pulse width are all adjustable.

Asynchronous/Alternate (A)

As per Synchronous Mode except that stimulation of Channel 2 occurs when contraction of Channel 1 is complete.

Delay (D)

As per Synchronous Mode except that stimulation of Channel 2 begins after adjustable delay after Channel 1 stimulation begins.

View All Reviews

Great product

Does exactly what I wanted it to do, I saw no problems or downsides so far

Did you find this helpful? 1 of 1 Found Helpful

Reviewed by: (Verified Buyer) Yaroslav Lashkul from Ukraine. on 3/30/2020

Adult

Very easy to use dual combination unit. Would recommend to anyone.

Did you find this helpful? 2 of 2 Found Helpful

Reviewed by: Cyndy Welke from CA. on 3/1/2020

Patient

I bought this unit for the estim portion to use on my arm and leg to assist with the the recovery from San stroke. While it does what it says as far as moving the affected limbs only time will tell if it is effective

Did you find this helpful? 1 of 2 Found Helpful

Reviewed by: Frederick Kotthaus from Bainbridge, Ga. on 2/13/2020

Great unit

Great unit with good intensity. Nice to find both tens and ems in a compact unit. Nice job, keep up the good work

Did you find this helpful? 2 of 2 Found Helpful

Reviewed by: Ralph from Connecticut. on 2/7/2020

I recently purchased TENS & EMS Combo Unit and the electrode pads. and my wife and I love it. We both have multiple arthritises, including Ankalosing Spondylitis, fibromyalgia, lumbar fusion of 3 discs for her and 3 slipped discs for me, so this helps alot! It also was delivered quickly. The electrodes are of good quality and have lasted a long time, where in the past I used to just order from Amazon and those were so poorly made and had to be thrown out after just a couple of uses. I will definitely buy again from here and only here. Thank you!!

Did you find this helpful? 4 of 4 Found Helpful

Reviewed by: Marica Delgado from Spokane Valley. on 2/4/2020

I have used my TENS unit several times and find it to be easy to use and very effective.

Did you find this helpful? 2 of 2 Found Helpful

Reviewed by: Avis Thomas from Beverly, MA. on 1/16/2020

mrs

very essay to use

Did you find this helpful? 1 of 1 Found Helpful

Reviewed by: Kimberly from Fort Worth. on 1/15/2020

husband

I purchased this for my wife for Christmas.She uses it practically every day.She uses it at night when she reads before going to sleep.She also carries it with her to work and uses it while at the office.Really nice unit and very easy to travel with you.

Did you find this helpful? 4 of 4 Found Helpful

Reviewed by: Ron from Winston-Salem. on 1/9/2020

Great NMES Unit

Had a different brand from different supplier and it was not intense enough. The InTENSity III has been great for me anterior tibialis muscele regeneration after an anterior tibial nerve injury. All the NMES settings are perfect for my recovery and healing, especial the intensity. And much less expensive than what the PT facility wanted to charge me. This unity has helped my nerve and muscle recovery greatly. The only cons are that the instruction manual is lacking in clarity and that I can not turn the ramp feature off completely to do a one second on, one second off to time it to my walking. I would buy this unit again and I would recommend to a friend.

Did you find this helpful? 2 of 2 Found Helpful

Reviewed by: gazman01 from Gainesville. on 1/5/2020

Love this product

Love this product. It helps me

Did you find this helpful? 1 of 1 Found Helpful

Reviewed by: Jillian from Bayonne. on 1/1/2020

Very good product

I ordered this unit after finding out that I was going to pay almost 3 times this amount from a medical supply provider. So glad I found the exact same unit here at Tens Pro and saved myself so much money. Thank you for providing such excellent customer service also with the replacement case at no extra charge. I will definitely recommend this to anyone who needs this type of device.

Did you find this helpful? 1 of 1 Found Helpful

Reviewed by: Mark Kirchner from Green Bay. on 12/24/2019

I'm very pleased with how this TENS unit works. Much better than my first did.

Did you find this helpful?

Reviewed by: Joni from Monett. on 12/20/2019

TENS & EMS Combo Unit

Amazing device, works perfectly! Also, this unit operates off power or a battery, a feature hard to find. You can not find a better device for the price!

Did you find this helpful? 1 of 1 Found Helpful

Reviewed by: Reed Markee from Jensen Beach. on 12/17/2019

Great Product

The product itself is great quality. The interface is user friendly. The unit is great for acute pain as it will relieve symptoms immediately while using it. I would recommend this product.

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Reviewed by: Brian from Belleville. on 12/13/2019

Chronic Pain Relief

The InTENSity Twin Stim III is three time better than the last TENS/EMS unit I purchased off of Amazon. The Amazon was listed as the best OTC unit in multiple reviews. InTENSity has the power and ranges that truely due provide for periods of relief. I took the unit to my physical therapist and he was impressed. He also took down the company contact info.

Did you find this helpful? 4 of 4 Found Helpful

Reviewed by: Greg from Missouri. on 12/2/2019

Great product

Everything I wanted and more at an amazing price. Thank you ??

Did you find this helpful? 3 of 3 Found Helpful

Reviewed by: Trent from Huntingdon. on 11/8/2019

Awesome product

Great powerful and helping me a lot love this 100%

Did you find this helpful?

Reviewed by: Lorenzo from Texas. on 10/2/2019

Needs a better manual

Product is ok, directions for use are very poor and difficult to understand. Does not address starting a session properly, and it took me a long time to figure out how to turn it on.

Did you find this helpful? 3 of 4 Found Helpful

Reviewed by: Kathy from St Marys City. on 9/10/2019

Parent

We purchased this unit back in April for our adult daughter at the request of her OT to help with rehabilitating her left arm and hand. It has been a great tool for her! Now our son has need for the same reason and we purchased another for him. Glad this has been of benefit to our kids!

Did you find this helpful? 1 of 1 Found Helpful

Reviewed by: Stephanie from Pine. on 7/17/2019

A second unit.

My wife and i are on disability and I have had a tens unit for 6 years. Now i got my wife one for her birthday. Too many times she needed it while i was using it. She loves it. Easy to use, and the case makes it nice for putting away.

Did you find this helpful? 3 of 4 Found Helpful

Reviewed by: Alden Gibbons from Louisville, Ky. on 7/17/2019

Great Unit

This is the exact unit used by the rehab hospital I was in. My O.T. from there have me some settings and it works great, what a quality unit!

Did you find this helpful? 4 of 4 Found Helpful

Reviewed by: Dale from Solvang. on 6/10/2019

inTenSity Combo Unit

love this tool. easy to use and effective

Did you find this helpful? 2 of 3 Found Helpful

Reviewed by: carmen from Florida. on 5/20/2019

mr.

works great portable easy adjustable

Did you find this helpful? 1 of 2 Found Helpful

Reviewed by: rick simmons from Massillon. on 2/27/2019

Bring great relief to my back. Easy to use. AA+++

Did you find this helpful? 1 of 1 Found Helpful

Reviewed by: (Verified Buyer) LMS from Ohio. on 1/27/2019

I highly recommend this product.

Did you find this helpful? 1 of 2 Found Helpful

Reviewed by: Paul from MA. on 1/4/2019

N/A

Same unit as "leased" by my therapy center, so was used to using it. Liked it then, so opted to own my own for great saving at the very attractive sale price. It's a good addition to our home therapy equipment.

Did you find this helpful? 3 of 3 Found Helpful

Reviewed by: David from Athens, AL. on 12/26/2018

blue collar

Wonderful product! Glad I bought it and NO MORE batteries!

Did you find this helpful? 2 of 2 Found Helpful

Reviewed by: Barbara from Baltimore. on 10/19/2018

Mrs.

I purchased this for my daughter who is on a years bike tour and into the 9 th month. I haven't had a report back from her yet

Did you find this helpful? 0 of 2 Found Helpful

Reviewed by: Martha Tighe from Murrieta, Ca. on 10/12/2018

I actually already had a tens unit but was burning through the 9 volt batteries. This unit has a money saver (??) A C adapter & good price point ??

Did you find this helpful? 1 of 1 Found Helpful

Reviewed by: Larry Bonelli from Franklin. on 10/8/2018

Simply the best

This combo unit you cant beat the price it does what its intended for plus you get the power adapter so you can save on battery purchases...I love it

Did you find this helpful? 3 of 3 Found Helpful

Reviewed by: Pantherrilla from Atlanta . on 10/6/2018

Quality of Life

This little beauty has increased my quality of life. Not kidding. Degenerative discs in neck vertebrae and torn rotator cuff, no pain medications just this used in the evening before bed, when pain is the worst. Works better than drugs. Highly recommended.

Did you find this helpful? 7 of 7 Found Helpful

Reviewed by: Irene from Maine. on 9/16/2018

Recommended by my OT. Excellent little unit.

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Reviewed by: Alexandra Nawaz from Atlanta,Ga. on 9/5/2018

N/A

I love my TENS unit. Works great and gives me the relief needed.

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Reviewed by: Deborah from OH. on 8/28/2018

Miss

Works really great

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Reviewed by: Jean from Fortwayne. on 8/26/2018

Operations Supervisor

2 thumbs way up!!

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Reviewed by: Charles Smith from Scranton. on 8/19/2018

retired

Works well. Hopefully it will help.

Did you find this helpful?

Reviewed by: linda brecher from Sedona. on 8/14/2018

Master and Commander

Excellent product, easy to use, great communication

Did you find this helpful?

Reviewed by: Gary Barger from HERNANDO. on 7/29/2018

supervisor

THE BEST INVESTMENT - I hate taking risks with my money glad I did take one on this product :) thank you so much

Did you find this helpful? 1 of 1 Found Helpful

Reviewed by: Van C from jersey city. on 7/19/2018

Machine operator

Was amazed at the punch this little unit packs. Works very well and was a good investment. Comes in its specially designed case to keep it protected and nice and neat. A+

Did you find this helpful? 1 of 1 Found Helpful

Reviewed by: Anthony r from Centerville. on 5/29/2018

Cost-effective!

I bought this product after having been diagnosed with shoulder impingement. I use TENS for pain management, and EMS for strenghtening muscles around the shoulder. I have benefited appreciably. My physio confirmed that the parameters in a pretty acceptable range, and they do not have to be as sophisticated as their devices' have. I would recommend this product. I could add that the pads last more than 10 uses as long as they are applied over a precleaned skin.

Did you find this helpful? 2 of 2 Found Helpful

Reviewed by: Ugur from BOSTON. on 5/8/2018

It works for me!

In the several weeks that I've owned the "InTENSity Twin Stim III Digital TENS & EMS Combo Unit" I've found it to be a very useful and high quality device. However, a few weeks after I bought it, I also bought a "Twin Stim Plus 3rd Edition - 4 Channel Digital TENS, EMS, IF & Russian Unit" and if you don't mind spending the extra money, you also get "IF" which I've found to be quite a bit better than just TENS alone. I highly recommend both units. The IF offers more pain relief than just the TENS but it requires at least 2 channels (4 electrodes) in a cross configuration, so depending on the location of the pain, you can't always use it but in most cases you can still use the TENS. If you have pain and haven't tried a TENS and/or IF unit... what are you waiting for?

Did you find this helpful? 2 of 2 Found Helpful

Reviewed by: Ed from Tennessee. on 5/1/2018

This product is perfect for those who had chronic pain of shoulders and knees. I seldom take pain pills since I used this product. It is also good to stimulate sagging muscles of abdomen as a result of pregnancy.

Did you find this helpful? 1 of 1 Found Helpful

Reviewed by: Edna Foster from California. on 4/3/2018

Good overall, but the electrode pads could be better

Did you find this helpful? 1 of 1 Found Helpful

Reviewed by: Donna Metz from fayetteville. on 3/23/2018

Dad

GREAT Unit!!! Shipping was very fast. And the unit works GREAT....and with the AC adapter just makes it even better... Thanks for the good services

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Reviewed by: Ed Koonce from Everett. on 3/7/2018

The Twim Stem III is amazing, works great, and easy to use.

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Reviewed by: DH from California . on 12/30/2017

Item came as promised and works as described. very pleased with the tens intensity twin slim III.

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Reviewed by: Donald McMahon from Kirkwood. on 12/29/2017

Owner

Very nice unit and works great. Thank you

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Reviewed by: Jamie from Alabama. on 12/10/2017

Better unit than expected. Being able to adjust pulse and intensity are. To common features for a unit in this price range. Having an A/C adapter is also a bonus. Very happy with product!

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Reviewed by: D smith from Tennessee . on 11/11/2017

So far this adds some instant reief. I'm please with my purchase. The cords are easily tangled,kind of annoying but all in all worth the money Buy extra pads as though after a few uses the don't stick well

Did you find this helpful? 1 of 1 Found Helpful

Reviewed by: Ruth from Las vegas. on 11/2/2017

Mrs

I have chronic shoulder pain due to impingement and tendonitis, with occasional flare ups in pain. After using this product a few times my pain has been greatly reduced. The effectiveness of this TENS unit is comparable to what was used on me during physical therapy. I especially like that you can adjust the pair of electrodes independently with regard to intensity. I also chose this unit because you can both use AC power or batteries. This saves on batteries when I am using the unit at home while sitting on the couch.

Did you find this helpful? 1 of 1 Found Helpful

Reviewed by: Heike McConnell from Bartow FL. on 10/18/2017