Twin Stim 2nd Edition TENS and EMS Combo Unit
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Twin Stim 2nd Edition TENS and EMS Combo Unit

Overall Rating Rating 4.7  |  102 reviews  |  Write a review
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Item #: 13698845
    This TENS and EMS combo unit offers non-invasive pain control without the use of drugs. Made to stimulate nerves and muscles, this unit features adjustable cycles and frequencies with five different TENS modes as well as two different EMS modes....more

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    This Twin Stim 2nd Edition TENS and EMS combo unit offers a drug-free method of controlling pain. This machine features five TENS modes and two EMS modes.

    This compact TENS and EMS combo unit stimulates nerves and muscles, allowing you to treat various conditions from the comfort of your home. This noninvasive unit includes timers to customize your treatment regimes and a convenient patient compliance meter that tracks your accumulated application history for your review. A safety amplitude cap prevents any discomfort from power jolts if a power knob is inadvertently adjusted during use.

    • Brand: Current Solutions
    • Uses for: Transcutaneous Electrical Nerve Stimulation (TENS unit) and Electronic Muscle Stimulator is a non-invasive, drug-free method of controlling pain
    • Tens unit has five TENS modes: Burst, modulation, constant, MRW, SD, bi-pulse
    • Two EMS modes: Synchronous, alternate
    • Pulse width: 30-300 uS, (10us/ Step)
    • Pulse rate: 1-150Hz, 45 adjustable frequencies
    • 100 mA Amplitude
    • On ramp: adjustable 1-6 seconds
    • Cycle On time: adjustable 1-30 seconds
    • Cycle Off time: adjustable 1-30 seconds
    • Wave form: Asymmetrical Bi-phasic square pulse
    • Timer: 1 to 60 minutes (1 min/step)
    • Patient compliance meter: Memory of the accumulated time from 0-999 minutes of executed applications
    • Instructions: Manual included
    • Safety: Safety amplitude cap included
    • Materials: Plastic, electronics
    • Dimensions: 2 inches high x 9 inches wide x 8 inches long
    • Package contents/amount: Stimulator, lead wires, four self-stick high quality premium electrodes, 9-volt battery, hard plastic carrying case, instruction booklet
    • Model: DS2200
See description
1 year Manufacturer
Plastic, Electronics
Model No:
Brand: TENS
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Showing 5 most helpful reviews on this product.

  • 5 Stars 81
  • 4 Stars 18
  • 3 Stars 1
  • 2 Stars 1
  • 1 Stars 1
  • This TENS unit is perfect for at home & travel.

    This tens unit is everything I expected. A very portable, easy to use device. It can be used with a single lead (2 electrodes), or with 2 leads (4 electrodes). The timing and pulse parameters will be the same for both leads if using both. You can adjust the intensity independently. You will want to purchase extra sticky electrode patches. I found them online and also at my physical therapist. Best price for extra set of 4 sticky electrodes runs about $2.50. You will get one set with the unit. They measure 1.5" square, but you can use 1.25" round or square for this unit. Depending on your skin and cleanliness, one set may last daily use for 1 week. I'm still learning about this. You won't be disappointed with this unit. Good value for the money.

    • How did the image on site compare with the actual product? Exactly the same as pictured.
    • How accurate was the on site description of the product? Exactly as described.
    • Please tell us about the quality of the product. Easy to program. Easy to use.
  • Great quality for the price

    I suffer from alot of mid back spasms and neck pain from a severe car accident a few years ago. I've tried everything from P/T to massage, chiropractic, and nutritional therapy. I've been getting these spasms that last 5-6 hours at a time several times a week during flare ups that nothing seems to touch. This unit had greatly reduced the severity and length of the spasms. I don't go anywhere without it and even sleep with it turned on when needed. It's very easy to use and I like the TENS vs. EMS option. The construction is better than the last unit I had, I especially appreciate that the clip is metal as I keep it on my belt when I'm wearing it and I don't have to worry that it will break. Would definitely buy this unit again. Only cons which I did not indicate in my rating as I feel they are more personal to my situation than the unit itself: Make sure you try different shaped pads, the ones that come with it where too small to spread the current out enough for my pain management. Also I was really hoping I could use it on my neck also but it does not help the pain there.

    • How did the image on site compare with the actual product? Great
    • How accurate was the on site description of the product? Great
    • Please tell us about the quality of the product. Had to exchange my first unit because of an issue with the channels but 2nd has worked very well
  • Great machine & price = Happy consumers

    I injured my neck and shoulder a year ago transferring one of my patient over to another bed and since then my back has never fully recovered. I occasionally still experience pain, especially on my neck/shoulders. My physical therapist at that time recommended that I purchase a TENS unit but that brand that they're recommending literally cost an arm & two legs (approx $700?). Well, to make long story short... I searched online one night for TENS unit and ran into this machine w/ lots of good reviews and with a price that won't burst my wallet. I was hesitant at first but decided to give it a try since the price was reasonable and I have to say... I am glad I made that purchase! Machine works great and worth every cent. Also, what more can you ask for? It's a 2-in-1!

    • How did the image on site compare with the actual product? Exact
    • How accurate was the on site description of the product? Accurate
    • Please tell us about the quality of the product. Excellent
  • Great for a paralyzed person

    I am paralyzed and have tried cheaper stim units and they just didn't work well. This unit works great and can create a strong contraction on muscles that haven't been voluntarily used in nearly 4 years.

  • I recommend this product and this company.

    The product arrived very quickly... before I expected it. I used the product extensively to help heal a pulled hamstring. My hamstring healed a lot faster than it would have without the EMS. A couple weeks later my brother borrowed the unit for a similar situation. He also had good results.

    • How did the image on site compare with the actual product? The product image on te site was identical to the actual product.
View All Most Helpful Reviews
  • excellent lifelong product

    Works great for spasms..very pleased


    Noel C. Apr 22, 2015

  • Mpamie

    This is great! I'm planning on buying another for my brother who suffers with chronic back pain! Worth the money.


    Pamela M. Apr 21, 2015

  • Electric pain relief

    My spine was injured while I was a police officer directing traffic. After being hit by a pickup truck, I had to have spinal surgery for L4/L5 and L5/S1 (disc decompression). Since taking pain medicine was not an option and risky even if it was, my only chance was to find non-medicinal ways to decrease my pain. I found a few, but finally had to retire. I stumbled on an overly used TENS unit, but it was falling apart. I used it until I had to get another. When I got this unit, at first it was difficult to get used to since it has more bells and whistles than my old one. But I have since come to rely on this box and tend to go to doze off with it running. If you can find the larger pads like I did at my physical therapist, I find they deliver a better spread of pain relief, but it depends on your injury. Thanks for carrying this!!


    catfish1234 Apr 21, 2015

  • Mrs. B

    Enjoying the use of the Tens Unit


    Debra B. Apr 21, 2015

  • Great purchase

    I was replacing an old TENS unit that after 5 years was acting a funky. So far this one seems pretty sturdy. It's the same as my old one which at the time could only be gotten from a medical supply company with a prescription. This one is digital instead of all mechanical. A note of warning...if your not familiar with TENS / EMS ...start slow. It's more powerful then it seems. Or better yet get some instructions as to proper settings for you from your physical therapist.


    Sandra C. Apr 21, 2015

View All Most Recent Reviews

Product Q&A

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Why did you choose this product? Overstock on Feb 26, 2015
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I chose this product because many years ago I had spine issues. I used to go to a Chinese doctor in Ontario, CA for treatments of the Tens Method for pain and cardiac arrhythmia issues. It was a blessing to me. Since then, I've not had another opportunity to get back to CA to see this doctor, but I miss the Tens for back pain/muscle pain issues. I was very happy to find this product here, and it's a great compliment to the inversion tables. I will most definitely let my Chiropractor know, so he too may decide if he'd like to try this on some of his patients. leahanna412003 on Feb 26, 2015
highest rated TENS product. Hubby and I both have lots of knee and back pain.  on Mar 2, 2015
wanted a combo unit  on Apr 11, 2015

I understand the unit has two lead wires and each lead wire can use two electrodes (pads). However, can each of the two lead wires be set on separate settings so that I can attach two pads on my knee with a low setting and two pads on my hip with a high setting? KMS on Nov 23, 2014
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Hello KMS, unfortunately you are not able to do that. Thanks for shopping with us! overstockcustomercare1 on Nov 25, 2014
Yes. You must place two leads on your knee and the other two leads on your hip. Then adjust the settings to your needs. I own this unit so I know. needrain on Dec 20, 2014
Each set of pads (2) can be set on different settings. gjonesrdh on Dec 31, 2014

Aren't these units regulated by Federal Law to only be sold by a licensed physician? How can Overstock sell them? Lee on Oct 15, 2014
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We are still researching this and should have the answer shortly. overstockcustomercare1 on Oct 20, 2014
Hello Lee, thank you for your question. We have verified this unit is FDA approved, and can be purchased or sold over the counter. You may need to seek a prescription from a medical professional for insurance billing purposes. I hope this information is helpful. Have a great day! overstockcustomercare1 on Oct 22, 2014

Is it necessary to use ultrasound gel with the TENS? backpainmd on Apr 30, 2014
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No, it is not necessary. As long as the pads are new they will work fine without it. jmgoverstock on May 1, 2014
no, they used to use dampened spongelike material with the electrodes connected to it. rusty925 on Jul 8, 2014
If your pads are not sticking just wet them, shake off excess water, let stand for about 20 seconds and apply. Also keep them refrigerated in a sealed bag when not in use. They will last for a couple of months. dorothy2014 on Aug 15, 2014
No ... 748jsw on Sep 19, 2014

does this item have a bag or a case with it? cchuasy on Apr 22, 2014
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Hello cchuasy, Yes, it comes with a hard plastic carrying case. Thanks for shopping with us. overstockcustomercare1 on Apr 28, 2014
It comes with a very useful hard plastic case ... I've even packed it in a suitcase, and checked it for air travel. 748jsw on Sep 19, 2014

Which replacement electrodes work with this unit? fenris7 on Mar 26, 2014
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Hello, fenris7. Any universal electrodes would work with this unit. The ones that come with it are 2 x 2 electrodes, similar to the ones found on item number 15852229. Thank you for shopping with us! overstockcustomercare1 on Apr 7, 2014

what type of electrode connectors does this unit have? Pin or snap? theresasweet on Nov 24, 2013
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Hello theresasweet and thank you for asking your question. Model DS2200 uses the pin style electrode connectors. Please feel free to contact us again with any further questions. Have a great day! overstockcustomercare1 on Nov 26, 2013

I see you can buy the replacement pads at other sites a lot cheaper... why are they so much at Overstock? Can you recommend buying elsewhere? How often do they neeed to be replaced? Thanks mariburr on May 17, 2013
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Thank you for your question mariburr. We cannot speak for other sites. As far as the replacement pads, if stored properly in the sealable pouch, at room temperature, these self-adhesive electrodes should last for 8-12 uses each. Have a great day. overstockcustomercare1 on May 21, 2013
I don't know where you are finding replacement electrodes for a lot cheaper. Overstock has the best prices for replacement pads that I have found. warren8r on Feb 10, 2014

Which is the correct answer to: does this unit have 4 leads so you can maassage two places at a time? Overstock said NO; but next answer siad yes??? Confused. mariburr on May 17, 2013
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Thank you for your question mariburr. The Twin Stim 2nd has two channels and comes with two lead wires which can be used simultaneously. Each lead wire uses two electrodes. In other words, it can be used with two electrodes or four. I hope this clears things up. Have a great day. overstockcustomercare1 on May 21, 2013

does this unit have four leads for two spots at the same time fishnwizard on Feb 6, 2013
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Thank your for your interest in the Twin Stim 2nd Edition TENS and EMS Combo Unit. I have found that the unit does not have four leads. Please let us know if we can be of assistance on this or any other issue. overstockcustomercare1 on Feb 8, 2013
Yes to this question. You can massage 2 spots at the same time. tab132 on Mar 30, 2013

Can you tell me if the EMS will actually contract the muscles (as opposed to just stimulate them)? I need a unit that will do the muscle contraction for strength and re-building, as well as TENS for pain control. (Is the EMS the same as NMES units?) 45flathead on Nov 19, 2012
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I'm sorry for the delay in answering your question. I finally received the following answer: Electrical muscle stimulation (EMS) and neuromuscular electrical stimulation (NMES) are two names for the same thing. Devices that have this functionality do contract the muscle and are often used for the purposes of strength training and muscle re-building. overstockcustomercare1 on Nov 29, 2012

What are the dimenstions for the actual unit, not in the case? The description suggests that the product is 2 inches high x 9 inches wide x 8 inches long. Looking at the photo, it does not look like the width is only 1 inch shorter than the height, so I wonder if these are the dimensions for the product in its case. I would like to see if it will fit in my pocket. Thank you.  on Oct 9, 2012
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That is the measurement for the case. The actual product is 1 x 2 1/2 x 5. It looks quite small and I think it will fit in most pockets. overstockcustomercare1 on Oct 11, 2012
It's 4 x 2.5 and 1 inch deep. Fits into the pocket very easily, there is a clip on the back as well. tab132 on Mar 30, 2013

How does this unit compare to the TENS 7000? ash011 on Aug 11, 2012
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From looking at the specs, we would say they are quite similar. This unit has a little more adjustability and range, and also has the EMS modes which we think makes it a slightly better machine. overstockcustomercare1 on Aug 13, 2012

Can this unit use an AC adapter? If so, does it have one in the packaging? dabronxboy on Jul 18, 2012
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This unit only takes a 9 volt battery. overstockcustomercare1 on Jul 18, 2012

I am looking to buy a good TENS unit with muscle simulator having nice features and rechargable battery...Does this unit has rechargable battery ? Also, please provide the name of best TENS unit available. akumar02 on Jul 17, 2012
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This item takes a 9-volt battery and does not come with a rechargeable battery. As for which is "the best" that is a personal decision. You may find reading the reviews of the various units we have available helpful. overstockcustomercare1 on Jul 18, 2012

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