Additional Features
The following additional features are designed for you to customize your scanner. Once these features have been turned ON or OFF, they will remain as they are set until you reset them, even if you turn the scanner OFF and then ON again.
Dimmer
To change brightness of the display:
1.Press MENU/BACK.
2.Select 3:SYSTEM OPTION / 1:DIMMER /
1:DIMMER LIGHT by rotating the VFO and pressing E.
3.Select one from 1:HIGH or 2:MEDIUM by rotating the VFO and pressing E.
To change lighting time:
1.Press MENU/BACK.
2.Select 3:SYSTEM OPTION / 1:DIMMER /
2:DIMMER TIME by rotating the VFO and pressing E.
3.Select 1:15 SECONDS or 2:INFINITE by rotating the VFO and pressing E.
Enter Lock
You can lockout the keypad to prevent
1.Press MENU/BACK.
2.Select 3:SYSTEM OPTION / 4:ENTER LOCK by rotating the VFO and pressing E.
3.Select 1:ON by rotating the VFO and pressing E.
Key Lock
Key Lock prevents accidental key entries except the following keys (KEYLOCK, HOLD/MAN and RSM).
1.Press and hold 
for 2 seconds to turn KEYPAD LOCK ON or KEYPAD LOCK OFF , and then you will hear two beeps.
If you press any key (except KEYLOCK, HOLD/MAN and RSM) when Key Lock is ON, KEYPAD LOCK ON appears on the display.
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