AB-COM IPBox 250S PVR User Manual - page 13
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3. DIGIT LED DISPLAY
This will display the current channel or certain programming functions when it is turned on.
4. MENU
Press this button to display the Main Menu page and to go to previous menu with saving
changed values.
5. EXIT
Press this button to exit from menu pages.
6. OK
This button is to confirm setup or menu options.
7. VOL (Left)
In program mode this button will move the cursor (highlighted) to the left to facilitate
selection. In normal operation mode it will decrease the volume of sound.
8. VOL (Right)
In program mode this button will move the cursor (highlighted) to the right to facilitate
selection. In normal operation mode it will increase the sound volume.
9. CH (Up)
In program mode this button will move the cursor (highlighted) upwards to facilitate
selection. In normal operation mode it is used to step up channels sequentially.
10. CH (Down)
In program mode this button will move the cursor (highlighted) downwards to facilitate
selection. In normal operation mode it is used to step down channels sequentially.