HowayGIS P78, Quick Start Manual, Page: 27 / 32

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6.
Disconnect this equipment from the A/C outlet before cleaning it.
Use a moist cloth. Do not use liquid or sprayed detergent for
cleaning.
7. Tofully disengage the power to the unit, please disconnect the
power from the ACoutlet.
8.
Do not scratch or rub the screen with a hard object.
9. Never use any of the solvents, such as Thinner Spray-type cleaner,
Wax, Benzene, Abrasive cleaner, Acid or Alkaline solvent, on the
display. Harsh chemicals may cause damage to the cabinet and the
touch sensor.