Product Overview
The DOMAS TENS Unit is a dual-channel, 24-mode Transcutaneous Electrical Nerve Stimulation (TENS) device designed for natural, non-invasive, and drug-free pain relief. It targets sore and aching muscles in various body parts, including the neck, back, shoulders, arms, and legs, resulting from exercise or daily activities. This portable and rechargeable unit offers adjustable intensity levels and treatment times for personalized therapy.

Image: The DOMAS TENS Unit, showing the main device, a set of electrode pads, and a black carrying bag. The packaging highlights its features: 24 Modes, Dual Channel, and Rechargeable.
Safety Information
Important: Please read all safety warnings and instructions before using this device. Failure to do so may result in injury or device malfunction.
- Do not use this device if you have a pacemaker or any other electronic medical device.
- Consult with a healthcare professional before use if you have any pre-existing medical conditions.
- Do not apply pads over open wounds, rashes, swollen, red, infected, or inflamed areas.
- Keep out of reach of children.
- Do not use while driving or operating heavy machinery.
- Discontinue use if you experience any adverse reactions and consult a doctor.
Package Contents
Upon opening your DOMAS TENS Unit package, please ensure all the following items are present:
- DOMAS TENS Unit Device
- 12 Pcs Medical Grade Electrode Pads (various sizes)
- Electrode Wires
- USB Charging Cable
- Carrying Bag
- Instruction Manual (this document)
Setup
1. Charging the Device
The DOMAS TENS Unit is equipped with a safe, rechargeable lithium battery. Before first use, fully charge the device.
- Connect the provided USB charging cable to the charging port on the TENS unit.
- Plug the other end of the USB cable into a wall charger (not included), power bank, or a laptop USB port.
- The battery indicator on the screen will show charging status. Once fully charged, the indicator will show a full battery.
2. Attaching Electrode Pads
Ensure your skin is clean and dry before applying electrode pads for optimal adhesion and conductivity.
- Connect the electrode wires to the electrode pads by snapping them onto the connectors.
- Plug the electrode wires into the A and/or B output ports on the top of the TENS unit.
- Remove the protective film from the electrode pads.
- Apply the sticky side of the pads firmly to the desired treatment area on your body. Ensure the pads are flat against the skin and not overlapping.

Image: A visual guide illustrating the four simple steps to begin therapy: 1. Attach the Pads, 2. Choose a Mode, 3. Set Intensity, and 4. Adjust the Timer.
Operating Instructions
1. Power On/Off
- To power on, press and hold the 'M' button (Mode button) for a few seconds until the screen illuminates.
- To power off, press and hold the 'M' button again until the screen turns off.
2. Selecting a Mode
The DOMAS TENS Unit features 24 pre-programmed massage modes for various pain relief needs.
- Press the 'M' button briefly to cycle through the 24 available modes. The selected mode will be displayed on the screen.
- Each mode offers a unique pulse pattern and sensation. Experiment to find the most comfortable and effective mode for your condition.

Image: The DOMAS TENS Unit's screen, highlighting its key features: 24 massage modes, 20 intensity levels, A/B dual channel control, long battery life, compact design, and rechargeable capability.
3. Adjusting Intensity
The device offers 20 intensity levels to customize your therapy experience.
- Use the '+' button to increase intensity and the '-' button to decrease intensity for Channel A.
- Use the '+' button on the right side to increase intensity and the '-' button on the right side to decrease intensity for Channel B.
- Start with the lowest intensity and gradually increase it until you feel a comfortable, strong, but not painful, muscle contraction.
4. Setting the Timer
The treatment time can be adjusted from 10 to 60 minutes.
- Press the 'T' button (Timer button) to cycle through the preset time options.
- The device will automatically shut off once the set time has elapsed.
5. Dual Channel Operation
The DOMAS TENS Unit features independent dual channels (A and B), allowing you to treat two different body areas simultaneously with different modes and intensities.
- Connect electrode pads for one area to Channel A and for another area to Channel B.
- Adjust the mode and intensity for Channel A using its dedicated controls.
- Adjust the mode and intensity for Channel B using its dedicated controls.

Image: A woman using the DOMAS TENS unit, with electrode pads placed on her arm (Channel A) and leg (Channel B). The image illustrates the independent control of each channel, showing different settings for position, mode, and intensity for both channels.
Electrode Pad Usage and Care
The medical-grade electrode pads are designed for multiple uses and optimal performance.
- Placement: Apply pads to clean, dry skin on the target muscle area. Avoid placing pads directly over joints, on the head, face, or front of the neck. Refer to the diagram on the device screen for suggested placement areas (shoulders, back, waist, legs, etc.).
- Reusability: The pads are reusable up to 45 times with proper care.
- Cleaning: If the pads lose their stickiness, gently wipe the adhesive surface with a damp cloth (water only) and let them air dry. Do not use soap or harsh chemicals.
- Storage: After each use, reattach the protective film to the pads and store them in the provided carrying bag in a cool, dry place.
- Replacement: Replace pads when they no longer adhere firmly to the skin or if you notice a decrease in stimulation effectiveness.

Image: A close-up of various high-quality electrode pads, including oval, palm-shaped, and rectangular designs, with their dimensions. Key features like "Latex-Free," "45 Times Reusable," and "Skin-Friendly Gel" are highlighted, emphasizing their durability and comfort.
Maintenance
- Cleaning the Unit: Wipe the device with a soft, dry cloth. Do not use abrasive cleaners or immerse the unit in water.
- Battery Care: To prolong battery life, avoid fully discharging the battery frequently. Charge the unit regularly, even if not in use for extended periods.
- Storage: Store the TENS unit and accessories in the provided carrying bag in a cool, dry place, away from direct sunlight and extreme temperatures.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not turn on. | Low battery; Device not charged. | Charge the device fully using the provided USB cable. |
| No sensation or weak sensation. | Pads not adhering well; Intensity too low; Wires not connected properly; Pads worn out. | Ensure pads are firmly attached to clean, dry skin. Increase intensity gradually. Check wire connections. Replace old pads. |
| Screen is dim or flickering. | Low battery. | Recharge the device. |
| Pads losing stickiness quickly. | Skin not clean/dry; Pads not stored properly; Pads are old. | Clean skin before use. Reattach protective film and store in bag. Replace pads if necessary. |
Specifications
- Model Number: 461c18da-9011-44c6-b8b8-e5445c39048f
- Brand: DOMAS
- Power Source: Battery Powered (1 Lithium Ion battery included)
- Material: Plastic
- Color: Silver
- Modes: 24 Massage Modes
- Intensity Levels: 20 Adjustable Levels
- Channels: Dual Channel (A/B Independent)
- Adjustable Timer: 10-60 minutes
- Package Dimensions: 6.14 x 3.62 x 3.03 inches
- Item Weight: 9.91 ounces
- Date First Available: March 25, 2018
Warranty and Support
DOMAS is committed to providing high-quality products and customer satisfaction. This product is covered by the manufacturer's warranty. Please refer to the warranty card included in your package for specific terms and conditions.
For any questions, technical support, or warranty claims, please contact DOMAS customer service. We offer 7/24 customer service and technical support to assist you.
Contact Information: Please visit the official DOMAS website or refer to your product packaging for the most current contact details.
Legal Disclaimer
Statements regarding dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition.
This TENS unit is intended for temporary relief of pain associated with sore and aching muscles due to strain from exercise or normal household work activities. It is not intended to diagnose, treat, cure, or prevent any medical condition. Always consult with a healthcare professional before starting any new treatment, especially if you have pre-existing medical conditions or are taking medication.