As in real life, alarms that appear in dreams are warnings against danger that must be taken into account to avoid unpleasant situations; especially if these images are frequent.The oneiric alarms can be sirens, whistles, shouts, or light signals. In the latter case, if they are located in a door or window it means that people that you trust could betray you. If it is yourself who sets the alarm off, then you must take on your projects as soon as possible; situations that could alter those plans may appear later.