Go to the Go!Control Panel and select the ‘Home’ button. Press the ‘Security’ button. Press the ‘Menu’ button. Press the ‘Toolbox’ button. Input the master code. Press the ‘Brightness/Volume’ button. Use the different buttons to adjust the brightness and volume. To save your settings hit ‘ok’. If you are having issues with your Panel, call Titan Alarm Customer Support 602-680-4567 or TEXT US 623-523-4849.