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IF-4K Interferential Digital Unit - 6 Mode with AC Adapter - DG1230, Plus Accessories Kit

IF-4K Interferential Digital Unit - 6 Mode with AC Adapter - DG1230, Plus Accessories Kit
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Multiple treatment modes and can provide up to two hours of treatment from its AC adapter

Dual Channel IF Digital Unit - IF 4K 6 Mode with AC Adapter
Interferential Stimulation

Thank you for choosing IF 4K which provides an interferential therapy to treat conditions where inflammation is a problem such as Back Pain, Osteoarthritis, Rheumatoid Arthritis, Muscular Pain / Strain, and Sports injuries.  IF 4K produces the low frequency current treatment that uses two medium frequency currents, which “interfere” with each other to produce a beat frequency that the body recognizes as a low frequency energy source.

The rationale is to overcome the problems caused by low-frequency currents, while maintaining their claimed therapeutic effect.  Unlike TENS, which delivers intermittent pulses to stimulate surface nerves and block the pain signal, Interferential Current Therapy delivers continuous stimulation deep into the affected tissue.

The actual stimulation is produced by crossing two alternating currents with medium frequencies simultaneously to a targeted body region.  As a result, these two currents will superimpose to form a new low frequency current deep within the tissue.

The IF 4K™ digital interferential offers multiple treatment modes and can provide up to two hours of treatment from its AC adapter.

IF waveform additional information

 If you are looking to use your TENS unit in the IF waveform, please be aware that you will need to use a power adapter for this waveform. IF waveform uses a high output and can drain a standard 9 volt battery VERY quickly. ALL TENS units with IF waveform are recommended to use a DC adaptor when using the unit in the IF waveform. This means that if you’re wanting to use your TENS unit in IF waveform, then it will not be portable (work on batteries alone.)

  • Dual Channel Interferential InTENSity IF Combo Unit
  • Transcutaneous Electrical Muscle Stimulator TENS Unit
  • Comes with set of electrodes / ac adapter (plug-in) included
  • Pain control / edema reduction / spasm reduction
  • PLUS - TENS Unit Accessories Kit contains everything you need to optimize your TENS/EMS Unit.

What is IF?

View the full operations manual: pdf manual Intensity IF 4K Manual

Questions: Manufacturer 1-800-3-ROSCOE (1-800-376-7263) or




Dual, isolated between channels


6 operation programs


Symmetrical Balanced Sine Wave

Output Current

Adjustable, 0-33 mA across 500 Ohm load on each channel

Beat Frequency

2-160 Hz

Carrier Frequency

4000Hz (with ±1% tolerance) fixed on Channel 1

Modulating Frequency

4002 ― 4160Hz (with ±1% tolerance) adjustable on Channel 2

Power Source

4 x 1.5V AA Size battery
AC/DC adaptor(Input:100~240V AC ; Output: 6V, 1A DC)

Low Battery Detection

4.0V ± 0.1V

Treatment Timer

Continuous, 15, 30, 45 or 60 minutes

Usage Timer

Maximum 999 hours, 59 minutes

Automatic Power Off

If the output is continually remained at zero for 5 minutes, the device will then be automatically shut down.

Output Configuration

4-Pads Treatment
Conventional Interferential Current Therapy (IFC) with Channel 1 delivers a fixed 4kHz sine wave, while output of Channel 2 can be varied between 4002Hz and 4160Hz.

2-Pads Treatment
Pre-modulated Interferential Current Therapy (IFC) in which both Channel 1 and 2 will simultaneously deliver an amplitude-modulated output with beat frequency varies between 2 and 160Hz.

Environment For Storage & Use

Temperature 0-40°C
Air humidity 30-75%
Air pressure 700hPa-1060hPa

Expected Service Life

5 years

Plus everything included with your TENS Accessories Kit!

  • OTC reusable TENS, EMS, NMS Electrodes, 2"x 2" square
    • For use with Transcutaneous Electrical Nerve Stimulators and Electric Muscle Stimulators
  • Tens/EMS 45" Replacement Lead Wires
    • For use with a wide range of TENS EMS units
  • Tens Conductive Spray
    • Ideal for use with conductive garments, rubber non-adhesive electrodes, and to re-hydrate self-adhesive electrodes.
  • Tens Lotion
    • Perfect for use after use of self-adhering electrotherapy sessions to replenish lost moisture and to ease irritation.
  • 9V Battery
    • This is our standard TENS battery.
  • TENS Electrode Skin Preparation Lotion
    • Decreases local perspiration, increases conductivity and protects skin from possible irritation due to prolonged or repetitive electrode stimulation treatments.

Package Includes:

  • 1 x IF 4K device
  • 2 x Lead Wire
  • 4 x Electrodes
  • 4 x Battery
  • 1x Adaptor
  • 1 x AC Plug
  • 1 x Belt clip
  • 1 x Instruction manual

Plus everything included in your TENS Unit Accessory Kit:

  • OTC Reusable TENS, EMS, NMS Electrodes, 2 x 2" square - 8 ea
  • Tens/EMS 45" Replacement Lead Wires - 2 ea
  • TENS Conductive Spray (2oz) - 1 ea
  • TENS Lotion (2oz) - 1 ea
  • Super Heavy Duty Alkaline 9V Battery - 1 ea
  • TENS Electrode Skin Prep Lotion (2oz) - 1 ea


  • Single patient use only.
  • DO NOT apply to broken skin.
  • Should a skin rash occur, immediately discontinue use and contact your clinician.
  • DO NOT stimulate while driving or operating machinery.
  • DO NOT exceed 0.1 watts.

Roscoe Medical, Inc.
21973 Commerce Parkway
Strongsville, OH 44149
©Roscoe Medical, Inc.

Product Reviews
Shopper Award has a Shopper Approved rating of 4.8/5 based on 1938 ratings and reviews

Transcutaneous Electrical Nerve Stimulation (TENS)

TENS is a non-invasive, drug free method of controlling pain, which uses tiny electrical impulses sent through the skin to nerves in order to modify your pain perception. In most people it is effective in reducing or eliminating the pain.

Electronic Muscle Stimulation (EMS)

EMS works by sending electronic pulses to the muscle(s). This is achieved by sending low frequency electric pulses through muscle tissue causing them to gently contract. In this way the muscles are passively exercised and blood flow is increased

Galvanic Stimulators

Galvanic Stimulators use direct current, which creates an electrical field over the treated area. The positive pad works like ice, causing reduced circulation to the area under the pad. The negative pad works like heat, causing increased circulation.


IF sends small comfortable electrical impulses through your skin to work on deeper tissue stimulation. The sensation works to prevent pain signals from reaching the brain.


Infrared Light Therapy help the body by delivering specific light waveforms that increase circulation. Increasing circulation helps promote healing, lessen swelling, and helps in reducing pain.


Portable Ultrasounds give advanced pain relief using sonic stimulation of soft tissue cells. They generate pulsed, high frequency sound waves, which travel deep into the tissue, generating vasodilation. This helps increase blood flow to the treated area.


Russian stimulation uses medium frequencies to provide stimulation to muscle groups. This is used to reduce muscle spasms as well as for muscle strengthening. This method was created to produce maximal muscle strengthening effects.

Micro Current

Microcurrent Therapy uses extremely small amounts of electrical current (millionths of an amp) to help relieve pain and heal soft tissues of the body. The electrical current used in Microcurrent Therapy is so small that it is rarely felt.