It's a keypad orientation, not unlike the alarm panel in the lobby.
那个是方位按键板，不像大厅里的数码板。
The front panel incorporates the controls for power, gain, alarm and display brightness.
前面的面板用来控制电源、增益、报警以及显示亮度。
The front panel incorporates the controls for power, gain, alarm and display brightness.
前面的面板用来控制电源、增益、报警以及显示亮度。
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