Graham-Field Grafco Premium Dual Function Stimulator

Item # Desc Pkg Price
GF-DF5 Dual Function Stimulator $2.13

Graham-Field Grafco Premium Dual Function Stimulator is an electrical stimulation system operated by three 1.5 (AAA) batteries. The operation principle of stimulation equipment is based on the simulation of the bodys own pulses, transmitted transcutaneously to nerve or muscle fibers, with electrodes. It is equipped with 5 TENS and 5 EMS treatment programs to help with varying levels of discomfort. This unit offers dual functionality with both TENS and EMS.

Graham-Field Grafco Stimulator Highlights:

  • Dual Function: TENS and EMS 
  • 20 levels of intensity 
  • Dual Channel 
  • LCD Panel 
  • 3 AAA batteries (not included)

Grafco Premium Dual Function Stimulator Features

  • Graham-Field Grafco Premium Dual Function Stimulator Kit Includes:
    - GF-DF5 Dual Channel Electrical Stimulator Device
    - 2 electrode lead wire
    - Four (4) 2" x 2" (50 mm x 50 mm) adhesive electrode pad
    - Operation manual
    - Lanyard (can be used to hang device from lanyard hole)
    - Carrying Case
  • Three (3) 1.5 V AAA Battery ( Required for operation, but not included with the device)
  • Sleek design with side indentions for easy handling dual channel
  • 20 Levels of intensity
  • LCD Panel
  • 3 AAA batteries (not included)
  • One (1) year limited warranty
  • Tens and EMS:
    - TENS is clinically tested and approved with the following applications:
    • Symptomatic relief of chronic intractable pain
    • Post traumatic pain
    • Post surgical pain
    - EMS Intended Use (Indications):
    • Relaxation of muscle spasm
    • Increasing local blood circulation
    • Prevention or retardation of disuse atrophy
    • Muscle re-education
    • Maintaining or increasing range of motion
    • Immediate post-surgical stimulation of calf muscles to prevent venous thrombosis

How To Operate Grafco Dual Function Stimulator?

Turn the Device ON
  • Press the POWER button to turn on the device; the LCD will show.

Select the Treatment Mode
  • While in the standby mode, press either the TENS button to select the TENS treatment mode or the EMS button to select the EMS treatment mode.

Select the Treatment Program
  • After pressing the TENS button to select TENS treatment mode, press the TENS button again to select the treatment program. The stimulator has five TENS programs.
  • After pressing the EMS button to select EMS treatment mode, press the EMS button again to select the treatment program. The stimulator has five EMS programs.

Adjust the Treatment Intensity
  • Press the Intensity Control button ([+] or [-]) to control the intensity output. The left [+] and [-] button control the CH1 channel intensity, and the right [+] and [-] button control the CH2 channel intensity.
  • When increasing the intensity, each click of the [+] button increases the output intensity of the selected channel by one level, which will show on the LCD. The stimulator has twenty levels of intensity. Adjusting the intensity may cause a tingling sensation; adjust the intensity to a level that is comfortable to you.
  • When decreasing the intensity, each click of the [-] button decreases the output intensity of the selected channel by one level, which will show on the LCD.

  • If the stimulation levels are uncomfortable or become uncomfortable, reduce the intensity to a comfortable level. If problems persist, contact your healthcare professional. 

Stop Treatment
  • To stop treatment, press the POWER button ( ) to turn the device off.

Load Detect Function
  • When the device hasnt detected load (i.e., an electrode is loose or off, resulting in no current), it will be assumed there is no load, the intensity will automatically return to zero, and the device will return to standby mode.

Grafco Dual Function Stimulator Specification

Device NameDual Channel Electrical Stimulator
Power supplyDC 4.5 V, three 1.5 (AAA) batteries (not included)
Output channelDual, isolated between output channels
Wave sharpBi-directional square-wave pulse
Output voltageMaximum 40 Vpp (at 500 O load)
Output currentMaximum 80 mA (at 500 O load)
DC capacity of output0
Treatment time20-30 min.
Output intensity0 to 20 levels, adjustable
Treatment modeTENS, EMS
Number of treatment programsTENS: five programs
EMS: five programs
Operating conditions41°F - 104°F (5°C - 40°C), 30% - 75% RH, 700 hPa - 1060 hPa atmospheric pressure
Transportation and storage environment14°F - 122°F (-10°C - 50°C), 10% - 90% RH, 700 hPa - 1060 hPa atmospheric pressure
Dimensions (L x W x H)4.33 in. x 2.34 in. x 1.18 in. (110 mm x 59.5 mm x 30 mm)
Weight (without batteries)0.1 lb (45 g)
Automatic shutoff3 min.
Electrode detection functionWhen amplitude level =1 and an open circuit at either channel is detected, amplitude level will be reset to 0 V
Output precisionAll output parameters allow ±20% error for the specification
Grade of waterproofIP22
Electric shockInternally powered ME equipment
Applied part, entire unitType BF applied part
Mode of operationContinuous operation
Device service lifeTwo years (Normally)


1 Year Limited Warranty

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What is HPFY’s return policy?

Customer satisfaction is our top priority. We stand behind our products. If the merchandise you received is defective or not what you expected it to be, and you wish to return the item, please submit a return request in the My Account section of our website, contact our Customer Service department at (866) 316-0162 / (203) 616-2850 or email us.

  1. Merchandise must be returned within 30 days of the receipt of your order. Returns are not accepted after 30 days.
  2. Items (including parts and accessories) must be returned in new, unused, and resalable condition in its original packaging.
  3. Before returning any product, the buyer must obtain a Return Authorization Number (RA#) from a customer service representative. With your RA# you will receive a prepaid return shipping label.
  4. Orders returned without obtaining an RA# will be entitled to receive only "In-Store Credit" that can be used towards future purchases.
  5. Return orders are subject to a 20% restocking fees.
  6. All custom orders and hygienic items are non-returnable. Refer to the “Non-Returnable Items” section for further details.
  7. Returns will be reviewed and inspected before issuing credit. Please allow 3 to 4 weeks for processing. The credit will be applied to your original method of payment.
  8. If the return is the result of a defective product or shipping error, we will refund the entire purchase amount and return shipping costs.

Which products are Non-Returnable?

Due to the hygienic nature of some items, they are non-returnable. The items listed below are non-returnable:

  1. All hygienic items.
  2. Opened personal care items.
  3. Anything opened, used, or tried on.
  4. All customized items.
  5. Besides these, items that have the “non-returnable” phrase on the website.

We reserve the right to make adjustments due to errors, changing market conditions, product discontinuation or typographical errors in advertisements. Images on the site may not always reflect the actual product. Footrests or leg-rests are not included with wheelchairs unless specified.

How do I receive a return authorization number?

You can submit a return request by logging into your account. You will receive the Return Authorization Number (RA#) details in the email within 2-3 business days.

  • Login to your account
  • Go to “order history”
  • Click on “return order”
  • Fill out the return form and Submit it

If you do not have an email address, we will make other accommodations for RA# Details. Write the RA# on your label affixed to your package prior to shipment.

How long does it take to receive a refund?

Please allow 3 to 4 weeks to process the returns. Once the item is received, and inspected, your refund will be processed and automatically applied to your credit card or original method of payment.

Is there any Restocking Fees?

  1. 20% restocking fees will be applied.
  2. Outbound shipping cost is non-refundable.
  3. For orders that qualified for free shipping, $8.99 will be deducted from the refund if the product is returned.

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