InTENSity Twin Stim III (Digital TENS and EMS Combo Unit)

Quantity Price
1 - 5 $34.99
6 - + $32.99



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.



Shipping Time: Please allow 3-10 business days for new orders to be processed and shipped out. Most orders received before 12:00 PM, Monday-Friday, will ship the same day, provided all items ordered are in stock. Most orders received after 12:00 PM, Monday-Friday, will ship the next business day. In some cases, orders can take up to 48-72 business hours to ship. Orders are not processed or shipped on Saturdays or Sundays, we apologize for the inconvenience.  

Shipping Method: All packages are shipped via USPS or UPS. In the case of an order being placed with a Free Shipping promotion, we use the best choice shipping option, which can be different in certain scenarios. For any questions, please contact us anytime during regular office hours of Monday-Friday, 8am-5pm CST, or add a note in the comments section of your order.

Delivery Time: We cannot guarantee when an order will arrive. Consider any shipping or transit time offered to you by USPS, UPS, and FedEx. We encourage you to order in a timely fashion to avoid delays caused by shipping or product availability. In the case that a shipping courier experiences weather delays, the tracking number will provide updates and all the information about the delivery. DSM Supply is not responsible for late deliveries due to weather delays.

Holiday Delivery: Please allow an extra 1-2 business days for processing and shipping around major Holiday periods. We will do our absolute best to ship your order as fast as possible, but please note that there could be a slight delay.

Making Changes: Due to our fast shipping process, once an order has been shipped, it is not possible to change or cancel that order. Please order carefully and make sure your order is correct before payment. For any returns, please follow the return policy.

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