Introduction
The TechCare Massager TENS Unit is a dual-channel electrical nerve and muscle stimulator designed to provide temporary relief from pain associated with sore and aching muscles due to strain from exercise or normal household and work activities. This device utilizes Transcutaneous Electrical Nerve Stimulation (TENS) and Electrical Muscle Stimulation (EMS) technologies to deliver low-voltage pulses to the skin, stimulating nerve fibers and promoting muscle contraction and relaxation. Please read this manual thoroughly before use to ensure safe and effective operation.
What's Included
Carefully unpack your TechCare Massager TENS Unit and verify that all items listed below are present and in good condition.
- 1 x TechCare Massager Controller
- 4 x Large/Medium Electrode Pads (2 large, 2 medium)
- 2 x Small Electrode Pads
- 2 x Electrode Cables
- 1 x Carrying Bag
- 1 x User's Manual (this document)
- 1 x USB Charger Cable
- 1 x Electrode Pad and Wire Holder
- 1 x Treatment Points Chart

Image: All components included in the TechCare Massager TENS Unit package.
Device Overview
Familiarize yourself with the main components and controls of your TechCare Massager TENS Unit.

Image: Front panel of the TENS Unit showing the display and control buttons.
- Time Indicator: Displays the remaining session time.
- Battery Indicator: Shows the current battery level.
- Massage Modes: Icons representing the 24 preprogrammed massage modes.
- Strength Indicator: Bar graph showing the current intensity level (20 levels).
- Mode Selection (M) Button: Press to cycle through the 24 massage modes.
- Strength Adjuster (+/-) Buttons: Press '+' to increase intensity, '-' to decrease intensity.
- Time Adjuster (T) Button: Press to adjust the session duration (each press adds 20 minutes).
Setup
1. Charging the Device
- Connect the USB charger cable to the charging port on the device.
- Plug the other end of the USB cable into a compatible USB power adapter (not included) or a computer USB port.
- The battery indicator on the display will show charging status. A full charge can take up to 10 hours for the initial charge.
- Once fully charged, the device can provide up to 20 hours of use.
2. Attaching Electrode Pads and Cables
- Ensure the device is turned off before connecting or disconnecting pads.
- Gently peel the electrode pads from their protective film. Retain the film for storage.
- Snap the electrode cables onto the metal studs of the electrode pads. Ensure a secure connection.
- Insert the pin connectors of the electrode cables firmly into the output ports on the top or bottom of the TENS unit.
3. Applying Electrode Pads
- Clean and dry the skin area where you intend to place the pads. Avoid applying to broken or irritated skin.
- Place the electrode pads firmly on the desired treatment area. Refer to the included Treatment Points Chart for recommended placements.
- Ensure pads are not touching each other.

Image: Example of electrode pad placement for various body areas.
Operating Instructions
1. Power On/Off
- To turn on the device, press and hold the 'M' (Mode Selection) button for a few seconds until the screen illuminates.
- To turn off the device, press and hold the 'M' button again for a few seconds until the screen turns off.
2. Selecting a Massage Mode
- After powering on, the device will display the current mode.
- Press the 'M' button repeatedly to cycle through the 24 preprogrammed massage modes (e.g., Tapping, Acupuncture, Deep Tissue, Foot, Cupping, Combo).
- Select the mode that best suits your needs.
3. Adjusting Intensity
- Once a mode is selected, use the '+' button to increase the intensity of the stimulation.
- Use the '-' button to decrease the intensity.
- There are 20 levels of adjustable strength. Start with a low intensity and gradually increase until you feel a comfortable, yet effective, sensation. Avoid setting the intensity too high, which can cause discomfort.
4. Setting Session Time
- Press the 'T' (Time Adjuster) button to set the desired session duration.
- Each press of the 'T' button will add 20 minutes to the session time.
- The device will automatically shut off once the set time has elapsed.
Maintenance
1. Cleaning the Device
- Turn off the device and disconnect all cables before cleaning.
- Wipe the device with a soft, slightly damp cloth. Do not use abrasive cleaners or immerse the device in water.
- Ensure the device is completely dry before storing or next use.
2. Caring for Electrode Pads
- After each use, gently remove the pads from your skin and reattach them to their protective film.
- If the pads lose their adhesiveness, clean them with a small amount of water and let them air dry. This can help restore stickiness.
- Replace pads when they no longer adhere well to the skin, as poor adhesion can reduce effectiveness and cause discomfort.
3. Storage
- Store the device and accessories in the provided carrying bag in a cool, dry place, away from direct sunlight and extreme temperatures.
- Keep out of reach of children.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No sensation or weak sensation |
|
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| Device does not turn on |
|
|
| Skin irritation under pads |
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Specifications
- Product Dimensions: 3.3 x 0.2 x 2.5 inches
- Weight: 2 ounces
- Manufacturer: Otto Trading
- Model Number (ASIN): B01JAVH23C
- Massage Modes: 24 preprogrammed modes
- Intensity Levels: 20 adjustable levels
- Power Source: Rechargeable internal lithium battery
- Battery Life: Up to 20 hours per charge
Warranty and Support
TechCare Massager offers a Lifetime Warranty and Hassle-Free Return policy for this product. For any questions, concerns, or warranty claims, please contact TechCare Massager customer support directly.
Manufacturer: Otto Trading
Seller: TechCare Massager
For support, please visit the TechCare Massager store on Amazon or refer to the contact information provided with your purchase documentation.