We MF79U, Quick Start Manual, Page: 15 / 44

14
• Use original accessories or accessories
that are authorized. Using any
unauthorized accessories may affect the
performance of the device and violate the
related national regulations about telecom
terminals.
• Avoid using the device near or inside
metallic constructions or establishments
that can emit electromagnetic waves,
because signal reception may be affected.
• The device is not waterproof. Keep the
device dry and store it in a shady and cool
place.
• Do not use the device immediately after
a sudden temperature change, because
dew may be generated inside and outside
the device. Do not use it until it becomes
dry.
• Handle the device carefully. Do not drop,
bend or strike it. Otherwise the device
may be damaged.
• Only qualified personnel can dismantle
and repair the device.