Curtis LT7028 - Manual (Page 10)

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the “POWER” key for 3 seconds, the screen will display the power
off interface, choose the power off item to confirm, the system will
shut automatically
【 Note】When the device with low battery it will alarm continuous
and shut automatically without charging. If the device can not start
up please check if the battery is low, and try it again after the battery
is charged
3.3 Orientation Sensor Setting
The tablet contains a sensor that will automatically change the
orientation of most screens as you rotate the tablet. The sensor
works best when the tablet is rotated perpendicular to the ground
(i.e., when the tablet is held upright and not flat on its back).
【
Note】Main Menu and Application Menu could be only shown in
horizontal screen (refer to 3.3.1 and 3.3.2)
3.3.1 Main Menu 3.3.2 Application Menu
3.3.3 Apps (Horizontal)
3.3.4 Apps (Vertical)
The Orientation sensor can be turned on an off in the Orientation in
Sound & Display setting menu.