Operation29UNIDEN UH5045 UHF CB TransceiverVolume Sync1. Press [MENU/ENTER] seven times. The volume sync setting flashes.2. Turn the Rotary Channel Selector at the base or press on the RemoteSPK/MIC to change the volume sync on/off.3. Press [MENU/ENTER]to store the setting.4. Press and hold[MENU/ENTER] toexit from the menu mode.NOTE• When volume sync function is active, the volume of base and RemoteSPK/MIC are synchronized.• Volume sync function can be used only when the optional RemoteSPK/MIC is connected.Backlight Colours1. Press [MENU] 8 times. The Backlight setting flashes.2. Turn the Channel Selector or press / to change the setting between Blue, Red,Purple(magenta), Green, Cyan, Yellow and Clear (white).3. Press [MENU] to store the setting.4. Press and hold [MENU] to exit from the menu mode.NOTEBacklight colour change is not available for the optional RemoteSPK/MIC.