M30U Feels Too Hot During Use

Published at: 2026-05-22

STAMP mode, intensity level, and usage time check

Potential Causes

  • STAMP mode naturally produces warmth.
  • The intensity level is too high.
  • The device stayed on the same area too long.
  • The device was used continuously for an extended time.
  • The environment temperature is too high.
  • Skin has not yet adapted to the device.

Troubleshooting Steps

  1. Start from Level 1
    If you are new to the device, start with Level 1 and gradually build tolerance.
  2. Do not stay on one area too long
    In STAMP mode, move to the next spot after the reminder. Avoid keeping the device on the same area for too long.
  3. Follow the session time limit
    Do not exceed 15 minutes per session.
  4. Let the device cool down if needed
    If the device body feels hot after continuous use, turn it off and let it cool for 2–3 minutes before continuing.
  5. Use within the recommended temperature range
    Use the device in a 5–35°C environment.
  6. Stop if discomfort occurs
    If you feel burning, pain, or strong heat, stop using the device immediately.

Details

If the device becomes unusually hot, produces smoke, has a burning smell, or appears damaged, stop using it and prepare your order number, purchase platform, a short video showing the issue, and your device SN code / Serial Number, then fill out the form.
Where to find the SN code:
For the JMOON by Ulike NouvelleSkin M30U, the SN code is located at the bottom of the device, below the charging port.

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