Arturia MatrixBrute User Manual page 5

7. Do not open or insert anything into the instrument that may cause a
fire or electrical shock.
8. Do not spill any kind of liquid onto the instrument.
9. Always take the instrument to a qualified service center. You will
invalidate your warranty if you open and remove the cover, and
improper assembly may cause electrical shock or other malfunctions.
10. Do not use the instrument with thunder and lightning present;
otherwise it may cause long distance electrical shock.
11. Do not expose the instrument to hot sunlight.
12. Do not use the instrument when there is a gas leak nearby.
13. Arturia is not responsible for any damage or data loss caused by
improper operation of the instrument.