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Custom option 2/3/4/5 button election, press the button to display correspondingly:
Fire alarm
4.6.
When the controller sends a fire alarm message, the controller screen will display"Fire
warning"Prompt, the red light of the microphone pole will flash until the controller cancels the fire
alarm and the controller resumes its pre-alarm state. In the fire alarm, the button is invalid.
Menu page
4.7.
Enter the menu page, as shown in the figure below, there are system settings, services, volume,
brightness adjustment and other functions.
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