The IF 4K Digital Interferential Device offers multiple treatment modes and can provide up to two hours of treatment with batteries or unlimited treatment using the AC adaptor.

Product Features:

  • Dual channel digital device comes complete with AC adaptor
  • Six modes of operation
  • Low battery indicator light
  • Automatic power off when unit not in use
  • Waveform: Symmetrical balanced sine wave
  • Beat Frequency: 2-160 Hz
  • Carrier Frequency: 4000 Hz
  • Modulating Frequency: 4002-4160 Hz
  • Timer: 15, 30, 45 and 60 minutes
  • Usage Timer: Maximum 999 hours
  • Power Source: 4 AA batteries or AC adaptor


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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