User's Manual

3) Press OK key and the LCD will show “Operation Succeeded”. The auto lock time is saved.
During the set time, the keypad will be locked automatically if no operation is performed on it.
9.5.3 Locking the Keypad Quickly
Press 【*】key in any interface to lock the keypad.
9.5.4 Unlocking the Keypad
When the keypad is locked, press and then 【*】key to unlock the keypad.
9.6 Screen Brightness Setting
You can adjust the brightness of the screen based on different situation.
1) Press in the home screen to enter the menu.
2) Select and enter “
setting” menu.
4) Select “Brightness” and enter the interface.
5) Press【Up】 key or 【Left】 key to increase the brightness; press【Down】 key or 【Right】key to
decrease the brightness.
6) Press OK key and the LCD will show “Operation Succeeded”. The brightness setting will be saved.
9.7 Screen Backlight Setting
You can set the backlight duration of the screen based on different situation to save battery power.
1) Press
in the home screen to enter the menu.
2) Select and enter“
setting” menu
3) Select “Backlight” and enter the interface.。