1. Introduction
The Prorelax TENS + EMS Duo system is a handy digital electrostimulator designed for effective pain relief and muscle strengthening. This device combines two useful functions, Transcutaneous Electrical Nerve Stimulation (TENS) and Electrical Muscle Stimulation (EMS), offering a versatile solution for various physical discomforts. It is a natural method, free from side effects, and proven to be safe and easy to use.
Many individuals experience muscle pain and tension, which can limit mobility and reduce overall quality of life. The Prorelax TENS/EMS Duo aims to provide an accessible and effective treatment option, reducing the need for constant medical visits or expensive physiotherapy treatments.
2. Safety Warnings
Please read all safety instructions carefully before using the device.
- The massager must not be used by individuals with pacemakers or other electronic implants.
- Keep the device away from water and do not immerse it.
- Pay attention to safety when handling and disposing of batteries.
- Do not use the device on open wounds, irritated skin, or areas with swelling, redness, or inflammation.
- Consult a healthcare professional before use if you have any pre-existing medical conditions.
- Keep out of reach of children.
3. Product Overview
3.1 Components
The Prorelax 39263 TENS/EMS Duo package includes:
- 1 x TENS+EMS control unit
- 4 x Reusable electrode pads
- 3 x AAA 1.5 V batteries
- 2 x Connection cables
- 1 x Detailed instruction manual
- 1 x Storage pouch

Image: Prorelax TENS/EMS Duo device, electrode pads, connection cables, AAA batteries, and storage pouch.
3.2 Key Features
- Dual Functionality: Combines TENS (Transcutaneous Electrical Nerve Stimulation) for pain relief and EMS (Electrical Muscle Stimulation) for muscle strengthening and rehabilitation.
- 8 Predefined Programs: Offers a variety of programs to suit different needs and body areas.
- 2 Independent Channels: Allows for separate intensity adjustment for two different body areas simultaneously.
- Adjustable Intensity: Individual intensity levels can be set for each channel.
- Adjustable Treatment Duration: Timer settings from 5 to 60 minutes.
- LCD Display: Clear screen showing treatment mode, pulse frequency, pulse width, treatment duration, and intensity.
- Automatic Shut-off: Device turns off automatically after the set treatment time.
- Memory Function: Saves the last used program and treatment duration for convenience.
- Portable Design: Compact and lightweight for use at home or on the go.

Image: Front view of the Prorelax TENS/EMS Duo device, showing the LCD screen and control buttons.

Image: Visual representation of TENS therapy for acute pain relief (shoulder) and EMS for active muscle building (thigh).
4. Setup
- Insert Batteries: Open the battery compartment on the back of the device and insert the 3 AAA 1.5 V batteries, ensuring correct polarity.
- Connect Cables: Plug the connection cables into the output ports (CH1 and CH2) on the top of the device.
- Attach Electrodes: Connect the electrode pads to the ends of the connection cables. Ensure a secure connection.
- Prepare Skin: Clean and dry the skin area where the electrodes will be placed. Remove any lotions, oils, or sweat to ensure optimal adhesion and conductivity.
5. Operating Instructions
5.1 Electrode Placement
Proper electrode placement is crucial for effective treatment. Refer to the detailed diagrams in the full manual for specific placements for different body parts. Generally, place electrodes on clean, dry skin, ensuring they are not directly over joints, bony prominences, or sensitive areas.

Image: Demonstrates typical electrode placement for TENS/EMS therapy on the arm and upper back.
5.2 Starting a Treatment
- Power On: Press the "ON" button to turn on the device. The LCD screen will illuminate.
- Select Program: Press the "MODE" button to cycle through the 8 predefined programs (P1-P8). Each program is designed for specific therapeutic effects (TENS or EMS).
- Adjust Intensity: Use the "CH1 +" and "CH1 -" buttons to adjust the intensity for Channel 1. Similarly, use "CH2 +" and "CH2 -" for Channel 2. Start with a low intensity and gradually increase it until you feel a comfortable, tingling sensation (for TENS) or muscle contraction (for EMS). Avoid setting the intensity too high, which can cause discomfort.
- Set Treatment Duration: The device allows for 12 treatment durations ranging from 5 to 60 minutes. The duration can be adjusted using the appropriate controls (refer to the full manual for specific button functions if not intuitive).
- Begin Treatment: Once the program, intensity, and duration are set, the treatment will begin. The LCD screen will display the remaining time and current settings.
5.3 Ending a Treatment
The device will automatically shut off once the set treatment duration is complete. You can also manually turn off the device by pressing the "OFF" button. The last used program and treatment duration will be saved for your convenience.
6. Maintenance
- Cleaning the Device: Wipe the device with a soft, damp cloth. Do not use abrasive cleaners or immerse the device in water.
- Electrode Care: After each use, reattach the electrode pads to their protective film to preserve their adhesive quality. If the pads lose their stickiness, they may need to be replaced.
- Storage: Store the device and accessories in the provided storage pouch in a cool, dry place, away from direct sunlight and extreme temperatures.
- Battery Replacement: Replace batteries when the low battery indicator appears on the screen or when the device performance diminishes. Dispose of used batteries according to local regulations.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not turn on. | Batteries are dead or incorrectly inserted. | Check battery polarity or replace with new batteries. |
| No sensation or weak sensation. | Electrodes not properly attached; intensity too low; electrodes worn out. | Ensure electrodes are firmly attached to clean skin; increase intensity gradually; replace old electrodes. |
| Sensation is uncomfortable or painful. | Intensity too high; electrodes placed incorrectly. | Decrease intensity; reposition electrodes according to the manual. |
| Screen is blank or flickering. | Low battery. | Replace batteries. |
If you experience any issues not listed here or if troubleshooting steps do not resolve the problem, please contact Prorelax customer support.
8. Specifications
| Feature | Detail |
|---|---|
| Model Number | 39263 |
| Dimensions (L x W x H) | 5.8 x 13.3 x 20.3 cm |
| Weight | 350 grams |
| Power Source | Battery powered |
| Batteries | 3 x AAA 1.5 V (included) |
| Material | Plastic |
| Channels | 2 (independent) |
| Programs | 8 predefined |
| Treatment Duration | 5 to 60 minutes (12 levels) |
| Manufacturer | Prorelax |
| Country of Origin | Taiwan |
9. Warranty and Support
The Prorelax 39263 TENS/EMS Duo device comes with a 2-year warranty from the date of purchase. This warranty covers manufacturing defects and malfunctions under normal use conditions.
For technical support, warranty claims, or any questions regarding the use of your device, please contact Prorelax customer service. Refer to the contact information provided on the product packaging or the official Prorelax website.

Image: A customer service representative, symbolizing available support for Prorelax products.







