This is what the S970 manual says, I don't have book for Genios.
(NOTICE
To avoid the possibility of malfunction/ damage to the product, damage to data, or damage to other property, follow the notices below.
Handling
• Do not use the instrument in the vicinity of a TV, radio, stereo equipment, mobile
phone, or other electric devices. Otherwise, the instrument, TV, or radio may
generate noise. When you use the instrument along with an application on your
iPad, iPhone or iPod touch, we recommend that you set “Airplane Mode” to “ON”
on that device in order to avoid noise caused by communication.
• Do not expose the instrument to excessive dust or vibrations, or extreme cold or
heat (such as in direct sunlight, near a heater, or in a car during the day) to prevent
the possibility of panel disfiguration, damage to the internal components or unstable
operation. (Verified operating temperature range: 5° – 40°C, or 41° – 104°F.)
• Do not place vinyl, plastic or rubber objects on the instrument, since this might
discolor the panel or keyboard.
Maintenance
• When cleaning the instrument, use a soft cloth. Do not use paint thinners,
solvents, alcohol, cleaning fluids, or chemical-impregnated wiping cloths.
Paula