BioStim® INF – Digital Interferential Stimulator

BioStim® INF Interferential Stimulator

Interferential therapy reaches deeper than a TENS unit as it incorporates a carrier frequency that mimics the body’s natural current. This allows the Interferential therapeutic current to gently pass into deeper tissue unlike a TENS device which pushes the current through the skin yet never reaching deep issue areas.

The BioStim® INF is the easiest to use and most effective interferential device the market today. Pre-programmed with three sweeps; S1 set at 1-10 Hz is used for Edema Reduction, S2 is set at 80-150 Hz used for Pain Relief, and  S3 set at 1-150 Hz for total treatment reducing Pain and Edema simultaneously. Simply follow the easy set up and patient instruction manual. The device offers bipolar stimulation using only two electrodes where the interferential stimulation is already “mixed” within the unit or you can choose Full Interferential stimulation with the use of all four electrodes. The device has a timer for the desired treatment time and operates on four AA batteries. Included is a wall adaptor for prolonged use.

This device comes with everything needed to manage your therapy session and includes our exclusive proprietary Touch Proof design and robust Touch Proof lead wires only available on BMLS (BioMedical Life Systems) devices.

2 Year Limited Warranty

Usable HCPCS codes # E1399       Item Number # KBSI

BioMedical Life Systems, Inc. distributes their products through various Dealers, Distributors, and Healthcare Organizations.

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General Specs

General Specs

Size: 3.25″ x 2.25″ x 1 5/8″
(82 mm x 70 mm x 45mm)
Weight: 8 oz (226 grams)
Carrier Frequency: 4000 Hz, fixed
Interference Frequency: 4001-4150 Hz, adjustable
Difference Frequency: 1-150 beats per second, adjustable
Bipolar Stimulation: Channel 1
Output Current: 0-66 milliamps peak to peak with 500 ohm load
Output Voltage: 0-33 Volts peak to peak with 500 ohm load
Waveform: Pulsed Sine Wave
Pulse Width: 125 microseconds for each phase
Max. Charge per Cycle: 12.5 microcoulombs
Power Supply: 4 AA (L00083) batteries or Medical Grade Wall Adaptor
Low Battery Indicator: Indicates when batteries are low
Four Frequency Shifts: Continuous, 1-10 Hz over 6 seconds and 80-150 Hz over 8 seconds and 1-150 Hz over 10 seconds.
Tolerance: +/-1%
Output parameters are across a 500 ohm resistance.


  • BioStim® INF device
  • (4) 2″ x 2″ square electrodes
  • BMLS Touch Proof lead wires
  • (2) AA batteries
  • A/C wall adaptor
  • Zippered pouch
  • Belt clip
  • Instruction manual