Lenovo Beacon - Manual (Page 23)

18
Safety and warranty guide
Adaptability index for product operation environment
Adaptability for power supply 220V ± 22V, 50Hz ± 1Hz
(Only For China Desktop)
90V - 264V, 50/60Hz
(Adaptive Voltage Positioning)
90V - 264V, 50Hz ± 1Hz
(With Voltage-selection Switch)
Operating temperature 10˚C - 35˚C
Relative operation humidity 35% - 80%
Storage & transportation temperature -40˚C - 55˚C
-20˚C - 55˚C (AIO)
Relative humidity for storage & transportation 20% - 93% (40˚C)
Atmosphere pressure 86 kPa - 106 kPa
Warning
It will cause irremovable failure when the device is powered on immediately
after it is moved from the environment with low temperature to the operating
temperature, so make sure your device to restore for more than 2 hrs under
the operating temperature.
2. Select appropriate operating desks and seats and adjust their height to ensure
your forearms are parallel with the floor while operating the keyboard and
mouse, and your eyes are basically on the same level with the monitor, as well
as ensure that your thighs are basically parallel with the floor and your feet can
be placed on the floor steadily. Furthermore, you may also choose backrest-
adjustable seats to enhance your comfort.
Warning
Incorrect posture or keyboard used for too much may cause physical injury.
3. Avoid facing the screen for too much with the same posture. It is recommended
to change your posture frequently and move your eyes away from the monitor
from time to time, which will help you maintain a relax posture and reduce visual
fatigue. Furthermore, take break for a moment or relax every some time (such
as 1 hour) to help you eliminate your physical fatigue.