The original alarm signaling device (1) has a light source that illuminates permanently, at least in an alarm state, and a modification is provided with at least one flashing light (2) and integrated into the alarm signaling device and connected electrically to the power supply of the alarm ...
Why Does My Alarm Only Vibrate|Wake Me Up 10|3in1 Functionality:Features vibrating, flashing light, and ringing alarms to ensure a reliable wake-up call for all sleepers. Digital Display:The LED digital display ensures easy-to-read time, even in low light conditions, for a clear wake-up ...
阅读理解:Under normal conditions, the act of communication requires the presence of at least two persons: one who sends and one who receives the communication. In order to communicate thoughts and feelings, there must be a conventional system of signs or symbols that mean the same to the sende...