1. Safety Information
Please read all safety information carefully before using the AVCOO TENS EMS Unit. This device is intended for pain relief and muscle stimulation. Improper use may lead to adverse effects.
Important Precautions:
- Do not use this product if you have an implanted defibrillator, cardiac pacemaker, or any other implanted metallic or electronic device.
- Do not use this product if you have heart rhythm problems, epilepsy, brain diseases, or neurological disorders.
- Do not use this product if you are experiencing undiagnosed chronic pain.
- Do not use this product if you are pregnant or in labor.
- Do not use this product if you have cancer.
- Do not use this product if you are sensitive to electrotherapy.
- Do not use this product excessively.
- Do not use this product above the neck, especially on the head or neck area.
- Do not use this product if you are under 22 years of age.
Consult with your physician or a qualified healthcare provider regarding your specific condition and appropriate medical treatment before using this device.
2. Product Overview
The AVCOO TENS EMS Unit is a compact, rechargeable, and portable dual-channel muscle stimulator designed for pain relief and muscle relaxation.
Key Features:
- 2-in-1 TENS & EMS Function: Combines Transcutaneous Electrical Nerve Stimulation (TENS) for pain relief and Electrical Muscle Stimulation (EMS) for muscle contraction and training.
- Slim & Portable Design: Weighs only 0.09 lb (4.8''x1.3''x0.5''), making it ideal for home and travel use.
- 30 Modes & 30 Intensity Levels: Offers a wide range of therapeutic techniques and customizable intensity to meet individual needs.
- Long-lasting Battery: Provides up to 30 hours of usage on a single charge, ensuring uninterrupted treatment.
- Medical-grade Pads: Includes 12 reusable electrode pads made with industry-leading American gel, certified by CE, RoHS, and FDA, ensuring safety and comfort.
Package Contents:
- 1 x AVCOO TENS EMS Unit (Black)
- 4 x 2” x 4” Rectangular Electrode Pads
- 4 x 2” x 3” Palm-shaped Electrode Pads
- 4 x 1” x 2” Oval Electrode Pads
- 2 x Lead Wires
- 1 x USB-C Charging Cable
- 1 x Storage Pouch
- 1 x User Manual

Image: The AVCOO TENS EMS Unit, showing the main device, various sizes of electrode pads, and connecting wires.
3. Setup
- Charge the Device: Connect the provided USB-C charging cable to the unit and a compatible USB power source. The battery indicator on the display will show charging status. Ensure the device is fully charged before first use.
- Attach Lead Wires to Pads: Connect the snap buttons on the lead wires to the corresponding snap buttons on the electrode pads.
- Connect Lead Wires to Unit: Insert the 3.5mm jack of the lead wires into the output ports at the top of the TENS EMS unit. The unit has two output ports, allowing for dual-channel use.
- Prepare Skin: Clean and dry the skin area where you intend to place the electrode pads. Avoid applying pads to broken or irritated skin.
- Apply Electrode Pads: Carefully peel the protective film from the adhesive side of the electrode pads. Firmly press the pads onto the desired skin area. Ensure good contact for effective stimulation.

Image: A close-up view of the medical-grade snap button electrodes, highlighting their design for secure connection and skin contact.
Video: This video demonstrates the unboxing and initial setup of the AVCOO 30 Modes Dual Channel TENS EMS Unit, including connecting the lead wires and pads.
4. Operating Instructions
- Power On: Press and hold the power button on the side of the unit until the display lights up.
- Select Mode: Press the 'V' (Mode) button to cycle through the 30 available modes (P1-P30). Modes P1-P17 are TENS modes for pain relief, and P18-P30 are EMS modes for muscle performance.
- Set Timer: Press the 'T/Lock' button to adjust the treatment time. Options typically range from 10 to 90 minutes.
- Adjust Intensity: Use the 'Λ' (Up) and 'V' (Down) buttons on the side of the unit to increase or decrease the intensity level (0-30). Start with a low intensity and gradually increase until you feel a comfortable, yet effective, sensation.
- Lock Screen: To prevent accidental changes during treatment, press and hold the 'T/Lock' button until a lock icon appears on the display. Press and hold again to unlock.
- Power Off: Press and hold the power button on the side of the unit until the display turns off.

Image: A detailed view of the unit's display, showing the selected mode, intensity level, and remaining time.
5. Maintenance
- Cleaning Electrode Pads: After each use, gently wipe the adhesive side of the pads with a damp cloth to remove any residue. Allow them to air dry completely before reapplying the protective film.
- Storing Electrode Pads: Store the pads on their protective film in the sealed bags provided to maintain their adhesive quality. Proper storage extends their lifespan for up to 50 uses or more.
- Cleaning the Unit: Wipe the main unit with a soft, dry cloth. Do not use abrasive cleaners or immerse the unit in water.
- Storage: Store the device and accessories in the provided storage pouch in a cool, dry place, away from direct sunlight and extreme temperatures.

Image: An illustration showing the multi-layered construction of the medical-grade electrode pads, emphasizing their durability and reusability.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No sensation or weak sensation | Pads not making good contact; Intensity too low; Battery low; Lead wire disconnected. | Ensure pads are firmly applied; Increase intensity gradually; Recharge the unit; Check lead wire connections. |
| Pads not sticking | Skin is oily/dirty; Pads are worn out; Protective film not reapplied. | Clean and dry skin thoroughly; Replace old pads with new ones; Always reapply protective film after use. |
| Unit does not turn on | Battery is completely drained; Power button not held long enough. | Charge the unit for at least 30 minutes; Press and hold the power button for 3-5 seconds. |
7. Specifications
- Model: B0B97BXQ59
- Brand: AVCOO
- Dimensions: 4.8'' x 1.3'' x 0.5'' (Unit)
- Weight: 0.09 lb (Unit)
- Battery: 1 Lithium Ion battery (included)
- Modes: 30 (17 TENS, 13 EMS)
- Intensity Levels: 30
- Usage Time: Up to 30 hours per charge
- Manufacturer: AVCOO
- Country of Origin: China
8. Warranty and Support
AVCOO stands behind the quality of its products. Your AVCOO TENS EMS Unit comes with a 12-Month Warranty from the date of purchase.
For any questions, concerns, or warranty claims, please contact our Premium Customer Service. We are committed to providing hassle-free support and ensuring your satisfaction.
Please refer to the contact information provided in your user manual or visit the official AVCOO website for assistance.





