Each electrode pad measures 2" x 3". They're commonly used to relieve pain in these areas: • Neck and shoulders: Eases tension and stiffness. • Upper and lower back: A frequent go-to for general or localized back pain. • Joints (knees, elbows, ankles, wrists): Helpful for arthritis, injury, or overuse. • Arms and legs (thighs, calves): Soothes muscle soreness and aches. • Feet: Provides foot pain relief.

Typically around 30–40 uses, depending on your skin prep and how well you store them. Here's how to get the most out of your TENS pads: • Clean your skin before each use: Remove oils, lotions, and sweat so the gel stays clean. • Wash your hands before handling pads: This helps avoid transferring dirt. • Store pads properly: Stick them back on the plastic liner or pad holder, then seal them in an airtight bag (with the air pressed out) to keep the gel from drying out. • Peel gently: Avoid stretching the pads when removing them — lift from the edge. • Clean the gel occasionally: Rinse with a few drops of water, pat dry with your fingers (don't rub), and let air-dry briefly before reapplying. This helps restore tackiness. • Replace when needed: If the gel feels dry, cracked, or no longer sticks, it's time for a new set — typically after 30–40 uses, depending on skin prep and storage. • Avoid lotions, oils, and alcohol wipes on the pads: These will degrade the gel.

The main ingredients of these pads are glycerin (non-tallow), water, and poly(acrylate) copolymer. They are latex-free. We recommend checking the ingredients first if you have any known sensitivities.

AVCOO multi-size TENS pads are compatible with all TENS EMS machines that use the industry-standard button-connected (3.5 mm) leads.

This TENS unit includes 32 TENS, EMS, and Relax modes: • TENS modes: P1–P14 • EMS modes: P1–P10 • Relax modes: P1–P8 Please refer to the mode list in the pad guide for full details. If you have any other questions, feel free to contact our customer service team — we're happy to help.

• Session length: 15–30 minutes per session is ideal, with a maximum of 60 minutes. • Daily frequency: 1–2 sessions per day for routine care or mild pain, and up to 3 sessions per day for more severe pain. • Rest between sessions: Please leave at least 2 hours between each session.

1. Check the charging cable: This product cannot be used while charging. Please make sure the charging cable is unplugged before powering on. 2. Charge first: Please charge the device with a 5V adapter for at least 30 minutes, then press and hold the power button to turn it on. It should power on after charging. 3. Still not working?: Please contact our customer service team for further troubleshooting.

1. Try a different cable and adapter. 2. Make sure the charging port is fully inserted. 3. Check the device: Is there any visible damage? 4. Still not charging with multiple chargers?: Please contact our customer service team.

1. Check the connections: Make sure the electrode pads, leads, and machine are all securely connected. Each lead should connect to two electrode pads. 2. Apply the pads fully: Press the pad flat against your skin so it makes complete contact. 3. Start at the lowest intensity: Gradually increase the intensity from the lowest setting. We don't recommend starting at a high level. 4. Try cross-testing (swap leads and pads) to rule out a bad cable or pad. If the issue persists, please contact our customer service team.

1. Check the intensity: This TENS unit shares the A/B mode, but the intensity is set separately. Please confirm that the intensity on each channel has been adjusted to a suitable level. 2. Cross-test the leads: Try swapping the two lead wires to see whether the issue is with a specific channel or the lead itself. 3. Still not working?: Please contact our customer service team.

1. Skin or pad condition: Oils, sweat, or aging pads can all weaken stimulation. We recommend cleaning your skin or trying a fresh pair of pads. 2. Try a different pad: Replace the pad and test again. 3. Try a different lead wire: Replace the lead and test again. 4. If the electrical stimulation is still weak, please contact customer service.

1. Common cause: Stinging is usually due to incomplete pad contact or intensity that's set too high. 2. Lower the intensity and make sure each pad is fully and firmly adhered to the skin. 3. Still stinging?: Try replacing the pads and lead wires. 4. If the problem persists, please contact customer service.

This TENS unit shares the A/B mode, but the intensity is set separately. Please confirm that both channels are set to the same intensity. Different parts of the body naturally have different sensitivities — we recommend adjusting the pad placement to a more comparable area for a more even feel.

1. Adjust to your body: TENS effectiveness depends on pad placement, mode, intensity, and your individual response. We recommend trying different modes and adjusting the pad placement. 2. Still not working?: Please contact our customer service team.

1. Please use after cleansing your skin. 2. It is recommended to apply the pads to a flat, dry area with little hair, avoiding application to joints or bends. 3. After use, reattach the pads to the protective film or place it on the pad board and store it in a sealed bag.

1. The pads are consumables; their adhesiveness decreases with each use. 2. Storage methods and skin cleanliness affect their lifespan. Generally, they can be used 30-40 times.

1. Please confirm that the device has reached the set time. 2. Check if the pads/wires are loose. 3. If the problem persists, please contact customer service for assistance.

Please try these: 1. It is suggested to check whether the connection between the pads, lead wire and the machine; One lead wire should connect with two pads and then connect with the machine. 2. Please check if the pads were attached to the skin in the usage area well. If the connection is loose, the machine will not feel the load, the. intensity can not be increased successfully and will get back to zero. 3. If the above ways can not yet help resolve it, please contact our customer service

There are two channels. Channels A and B can each be connected to a different pad group. The two channels share the same mode, but the intensity is set separately for each.

Here are a few simple tips: • Clean your skin first: Use mild soap and water (no alcohol or lotion), and dry thoroughly before applying pads. • Use fresh pads: Old, dried-out gel can cause uneven current and redness. • Rotate placement: Avoid using the same spots every session — let your skin rest. • Avoid sensitive areas: Never place pads over rashes, cuts, eczema, broken, or irritated skin. • Lower the intensity if needed: A sharp burning or prickling feeling often means too much current or poor contact. • Remove pads at the first sign of irritation: If itching or redness appears, take the pads off and apply a mild moisturizer once the skin has cooled. • Keep sessions short: Sessions longer than 30–40 minutes can increase irritation risk — please follow the recommended times.

1. The cable specs are 2.35mm DC jack with 2–3.5mm snap connectors. 2. You can search for compatible cables on Amazon. 3. If you have any questions or can't find a suitable cable, please reach out to our customer service team.

This TENS unit includes both TENS and EMS modes: • TENS: P1–P17 • EMS: P18–P30 Please refer to the mode list in the pad guide for full details. If you have any other questions, feel free to contact our customer service team — we're happy to help.

• Session length: 15–30 minutes per session is ideal, with a maximum of 60 minutes. • Daily frequency: 1–2 sessions per day for routine care or mild pain, and up to 3 sessions per day for more severe pain. • Rest between sessions: Please leave at least 2 hours between each session.

1. Check the charging cable: This product cannot be used while charging. Please make sure the charging cable is unplugged before powering on. 2. Charge first: Please charge the device with a 5V adapter for at least 30 minutes, then press and hold the power button to turn it on. It should power on after charging. 3. Still not working?: Please contact our customer service team for further troubleshooting.

1. Try a different cable and adapter. 2. Make sure the charging port is fully inserted. 3. Check the device: Is there any visible damage? 4. Still not charging with multiple chargers?: Please contact our customer service team.

1. Check the connections: Make sure the electrode pads, leads, and machine are all securely connected. Each lead should connect to two electrode pads. 2. Apply the pads fully: Press the pad flat against your skin so it makes complete contact. 3. Start at the lowest intensity: Gradually increase the intensity from the lowest setting. We don't recommend starting at a high level. 4. Try cross-testing (swap leads and pads) to rule out a bad cable or pad. If the issue persists, please contact our customer service team.

1. Check the intensity: On the TU1130, channels A and B share the same intensity setting. Please confirm that the intensity has been adjusted to a suitable level. 2. Cross-test the leads: Try swapping the two lead wires to see whether the issue is with a specific channel or the lead itself. 3. Still not working?: Please contact our customer service team.

1. Skin or pad condition: Oils, sweat, or aging pads can all weaken stimulation. We recommend cleaning your skin or trying a fresh pair of pads. 2. Try a different pad: Replace the pad and test again. 3. Try a different lead wire: Replace the lead and test again. 4. If the electrical stimulation is still weak, please contact customer service.

1. Common cause: Stinging is usually due to incomplete pad contact or intensity that's set too high. 2. Lower the intensity and make sure each pad is fully and firmly adhered to the skin. 3. Still stinging?: Try replacing the pads and lead wires. 4. If the problem persists, please contact customer service.

On the TU1130, channels A and B share the same intensity, so they should feel the same strength. Different parts of the body naturally have different sensitivities, though — we recommend adjusting the pad placement to a more comparable area for a more even feel.

1. Adjust to your body: TENS effectiveness depends on pad placement, mode, intensity, and your individual response. We recommend trying different modes and adjusting the pad placement. 2. Still not working?: Please contact our customer service team.

1. Please use after cleansing your skin. 2. It is recommended to apply the pad to a flat, dry area with little hair, avoiding application to joints or bends. 3. After use, reattach the pad to the protective film or place it on the pad board and store it in a sealed bag.

1. The pads are consumables; their adhesiveness decreases with each use. 2. Storage methods and skin cleanliness affect their lifespan. Generally, they can be used 30-40 times.

1. Please confirm that the device has reached the set time. 2. Check if the pads/wires are loose. 3. If the problem persists, please contact customer service for assistance.

Please try these: 1. It is suggested to check whether the connection between the pads, lead wire and the machine; One lead wire should connect with two pads and then connect with the machine. 2. Please check if the pads were attached to the skin in the usage area well. If the connection is loose, the machine will not feel the load, the. intensity can not be increased successfully and will get back to zero. 3. If the above ways can not yet help resolve it, please contact our customer service

There are two channels. Channels A and B can each be connected to a different pad group, but the intensity and mode of both channels are adjusted together.

Here are a few simple tips: • Clean your skin first: Use mild soap and water (no alcohol or lotion), and dry thoroughly before applying pads. • Use fresh pads: Old, dried-out gel can cause uneven current and redness. • Rotate placement: Avoid using the same spots every session — let your skin rest. • Avoid sensitive areas: Never place pads over rashes, cuts, eczema, broken, or irritated skin. • Lower the intensity if needed: A sharp burning or prickling feeling often means too much current or poor contact. • Remove pads at the first sign of irritation: If itching or redness appears, take the pads off and apply a mild moisturizer once the skin has cooled. • Keep sessions short: Sessions longer than 30–40 minutes can increase irritation risk — please follow the recommended times.

1. The cable specs are 2.35mm DC jack with 2–3.5mm snap connectors. 2. You can search for compatible cables on Amazon. 3. If you have any questions or can't find a suitable cable, please reach out to our customer service team.

The AVCOO 3-in-1 TENS Unit Muscle Stimulator comes with 24 pre-programmed modes: • TENS: P1–P16 • EMS: P17–P20 • Relax: P21–P24 Please refer to the mode list in the pad guide for full details. If you have any other questions, feel free to contact our customer service team — we're happy to help.

• Session length: 15–30 minutes per session is ideal, with a maximum of 60 minutes. • Daily frequency: 1–2 sessions per day for routine care or mild pain, and up to 3 sessions per day for more severe pain. • Rest between sessions: Please leave at least 2 hours between each session.

1. Check the charging cable: This product cannot be used while charging. Please make sure the charging cable is unplugged before powering on. 2. Charge first: Please charge the device with a 5V adapter for at least 30 minutes, then press and hold the power button to turn it on. It should power on after charging. 3. Still not working?: Please contact our customer service team for further troubleshooting.

1. Try a different cable and adapter. 2. Make sure the charging port is fully inserted. 3. Check the device: Is there any visible damage? 4. Still not charging with multiple chargers?: Please contact our customer service team.

1. Check the connections: Make sure the electrode pads, leads, and machine are all securely connected. Each lead should connect to two electrode pads. 2. Apply the pads fully: Press the pad flat against your skin so it makes complete contact. 3. Start at the lowest intensity: Gradually increase the intensity from the lowest setting. We don't recommend starting at a high level. 4. Try cross-testing (swap leads and pads) to rule out a bad cable or pad. If the issue persists, please contact our customer service team.

1. Check the intensity: On the TA2224C, channels A and B have their intensity set separately. Please confirm that the intensity has been adjusted to a suitable level on each channel. 2. Cross-test the leads: Try swapping the two lead wires to see whether the issue is with a specific channel or the lead itself. 3. Still not working?: Please contact our customer service team.

1. Skin or pad condition: Oils, sweat, or aging pads can all weaken stimulation. We recommend cleaning your skin or trying a fresh pair of pads. 2. Try a different pad: Replace the pad and test again. 3. Try a different lead wire: Replace the lead and test again. 4. If the electrical stimulation is still weak, please contact customer service.

1. Common cause: Stinging is usually due to incomplete pad contact or intensity that's set too high. 2. Lower the intensity and make sure each pad is fully and firmly adhered to the skin. 3. Still stinging?: Try replacing the pads and lead wires. 4. If the problem persists, please contact customer service.

On the TA2224C, channels A and B share the same mode, but the intensity is set separately. Please confirm that both channels are set to the same intensity. Different parts of the body naturally have different sensitivities — we recommend adjusting the pad placement to a more comparable area for a more even feel.

1. Adjust to your body: TENS effectiveness depends on pad placement, mode, intensity, and your individual response. We recommend trying different modes and adjusting the pad placement. 2. Still not working?: Please contact our customer service team.

1. Please use after cleansing your skin. 2. It is recommended to apply the pads to a flat, dry area with little hair, avoiding application to joints or bends. 3. After use, reattach the pads to the protective film or place it on the pads board and store it in a sealed bag.

1. The pads are consumables; their adhesiveness decreases with each use. 2. Storage methods and skin cleanliness affect their lifespan. Generally, they can be used 30-40 times.

1. Please confirm that the device has reached the set time. 2. Check if the pads/wires are loose. 3. If the problem persists, please contact customer service for assistance.

Please try these: 1. It is suggested to check whether the connection between the pads, lead wire and the machine; One lead wire should connect with two pads and then connect with the machine. 2. Please check if the pads were attached to the skin in the usage area well. If the connection is loose, the machine will not feel the load, the. intensity can not be increased successfully and will get back to zero. 3. If the above ways can not yet help resolve it, please contact our customer service

There are two channels. Channels A and B can each be connected to a different pad group. The two channels share the same mode, with the intensity set separately for each.

Here are a few simple tips: • Clean your skin first: Use mild soap and water (no alcohol or lotion), and dry thoroughly before applying pads. • Use fresh pads: Old, dried-out gel can cause uneven current and redness. • Rotate placement: Avoid using the same spots every session — let your skin rest. • Avoid sensitive areas: Never place pads over rashes, cuts, eczema, broken, or irritated skin. • Lower the intensity if needed: A sharp burning or prickling feeling often means too much current or poor contact. • Remove pads at the first sign of irritation: If itching or redness appears, take the pads off and apply a mild moisturizer once the skin has cooled. • Keep sessions short: Sessions longer than 30–40 minutes can increase irritation risk — please follow the recommended times.

1. The cable specs are 2.35mm DC jack with 2–3.5mm snap connectors. 2. You can search for compatible cables on Amazon. 3. If you have any questions or can't find a suitable cable, please reach out to our customer service team.