Use the ALARM or HELP button, the telephone or the intercom to call for assistance.
使用紧急呼叫或帮助按钮，也可打电话或用对讲机寻求救助。
The intercom had a loud call button that made a shrill beep when pressed.
这种对讲机有个大声呼唤按钮，按压时会发出嘀嘀尖叫声。
Freely switch between Phone call, Bluetooth Intercom, Music.
电话通话之间自由切换，蓝牙对讲，音乐。
Freely switch between Phone call, Bluetooth Intercom, Music.
电话通话之间自由切换，蓝牙对讲，音乐。
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