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What is Interferential (IF)?
Interferential uses the principle of interference, hence its name Interferential Therapy devices use two separate electrical frequencies, which work together to stimulate nerve fibers.
How does IF work?
The Interferential stimulator is a dual-channel electronic unit. It incorporates a digital display that indicates the operational modes and the output. It is equipped with an 8-bit microcomputer for controlling the system. The intensity, duration, frequency and modulation of the electrical impulses can all be adjusted. The stimulator uses 4 electrodes producing deeper stimulation when compared to other types of electrical stimulation. The degree of pain relief varies from individual to individual and also depends on the type of pain. The stimulation may reduce the level of perceived pain or eliminate it altogether. Pain relief may only be felt during the stimulation period but in many patients the pain relief persists once the stimulator has been switched off.

IF-908 Interferential Stimulator
IF-908 is the interferential stimulator (IF) device which is a battery operated device that includes two controllable output channels. Amplitude, mode and duration of the electrical impulses can be altered with the buttons or knobs. The biggest difference between TENS and IF is the rate. The pulse rate of IF is around 4000-4100 Hz which is much higher than TENS (2-150 Hz). This high frequency stimulation can easily pass through skin and reduce pain more effectively.
IF-908 provides effective interferential stimulation treatment for the relief of chronic pain, especially for aching muscles of the back, arms, or legs. The controls are protected by a cover in order to prevent accidental changes to the settings. With 9 IF modes and premium quality adhesive electrodes, IF-908 provides you the highly effective nerve stimulation for pain relief and pain management.
*FDA Approved for the pain relief product.
*510K approved for OTC use and safety regulations (IEC60601-1, IEC60601-1-2 EMC) certified.
*No prescription needed. Safe, All-Natural, Drug Free and Long-Lasting Pain Relief.

High Frequency
The pulse rate of IF-908 is around 4000-4100 Hz. This high frequency stimulation can easily pass through skin and reduce pain more effectively.

Belt Clip
Can easily use this clip to clip on your pants or clothes. Make the treatment portable and everywhere.

Backlit LCD
When the users press the buttons or operate the machine, the LCD Screen will turn to Backlit (Blue Light) mode which makes the users easily use it even in the dark night.
IF-908 | |
Channel | 2 Channels |
Amplitude | Adjustable 0-60mA peak into 500 ohm load each channel, constant current |
Size | 10.7cm(L) x 6.2cm(W) x 2.7cm(H) |
Weight | Approximately 150 grams (battery included) |
Carrier Frequency | 4000Hz fixed (CH1) |
Modulating Frequency | 4004-4160Hz, Adjustable (CH2) |
IF Frequency Modes | |
Constant Mode | Constant stimulation 4-160 bps, Adjustable |
Auto Sweep | 4-45 bps, 80-145 bps, 4 SET bps |
Interference Pulse Frequency | 4-160 bps, Adjustable, 4 bps/step |
Output Configuration | Quad polar (4 electrodes) |
Wave Form | Symmetrical Balanced Sine Wave |
Sweep Time | 15 seconds |
Pulse Duration | 125 us maximum |
Patient Compliance Meter | Display total treatment time |
Timer | 15, 30 minute selectable |
Max Charge Per Pulse | 15 Micro-coulombs Maximum |
LCD | Displays mode, bps rate, abrupt/ramp, timer, and channels |
Low Battery Indicator | A low battery indicator will show when the battery is low |
Power Source | 9V Battery/ Adapter |
Tolerance | There may be 10% tolerance of settings and 20% tolerance of output |
Lock | Prevents the patient from accidentally changing any of the set parameters |
Frequency Shift | Five modes, 1/1 abrupt shift, 6/6 abrupt shift, 6/6 ramped, 10/10 abrupt shift, 10/10 ramped, bps can be adjusted |
Frequency Shift Percent | Frequency shifts from 30% below the set frequency to 60% above and then return to 30% below the set frequency |

Everyway Medical Instruments, based in Taiwan, was established in 1991. Our company has been in the medical field for nearly 30 years and we are approved by ISO 13485, CE, FDA and DNV. Our main products are TENS, EMS, Electrode Pads, Probes, Conductive Garments, Treatment Tables and Traction Systems. All of our products are exported to the USA, Europe, Australia, the Middle East, UK and other 70 countries.
The strict quality control system was implemented in each link from materials entering, production to finished product leaving plant, which could guarantee the quality effectively.
The objective of EVERYWAY MEDICAL is to make people live a healthier life and embrace the world without pain. We’ll make every effort to manufacture meticulously, blaze new trails constantly, and provide the best products and service to our every partner.
Other Products from Everyway Medical:
Everyway Medical has been dedicated to the product development and innovation. In order to reduce the lead time of the production and maintain the quality, we implemented automatic control for the electrodes production and assembling, for our TENS and EMS units, we adopted one stop production line to reduce the production lead time.




Q: Are you a manufacturer or a trading company?
A: We’re a manufacturer based in Taiwan.
Q: What’s your average lead time of production?
A: For standard order, the lead time would be around 2 weeks because our factory’s policy is "make-to-order"(MTO).
Q: Do you have MOQ policy ?
A: Yes, we have different MOQ for different categories as following.
TENS/EMS - 20/32 sets based on different models
Probe : 100 sets
Conductive Garment :100 sets
Electrode Pad : 400 packs
Treatment Table : 1 set
Traction Unit : 1 set
Lead Wires : 200 packs
Q: How do you assure the product quality?
A: Our company has been in the medical field for nearly 30 years and we are ISO 13485, CE and FDA approved. Moreover, we have three steps of quality checkpoints before we ship the goods.
Q: Do you attend any medical trade show?
A: Yes, we would attend MEDICA in Dusseldorf, Germany every year and our booth number is 5D/38. Feel free to meet us there.
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