Dreams and visions of an alarm clock tell you that you are becoming aware of the fact that there are things going on in your life that need attention (your inner alarm clock). Another explanation is that you may feel that time is dependent. Alarm clock dreams are really about waking up, becoming aware - the inner clock and an inner alarm going off.
Another interesting explanation is that an alarm clock also represents the natural biological clock, the alarm clock can stand for the transition and/or menopause. But also menstruation and possibly the male and female energy that, as it were, comes into balance and/or requires awareness.
As an additional explanation, you can think of life or experience a situation as open-minded or with a fear of transience. Another explanation is that you forgot something very important. Maybe you didn't take into account the amount of attention that went into it. Awareness is reflected by the alarm clock, in addition there is of course a deep connection with a clock and time!
To see a clock in your dream or vision indicates the importance of time in your life, or in a situation. Another explanation is that the time is up, you are really done with it now. Yet another explanation is experiencing anxiety or feeling that you are not on top of things. Not being in control of the time and/or the situation - not influencing everything that is going on in your life right now and/or who are connected to it.
An alternative explanation is that the clock represents longing for the future. Another alternative explanation is like the clock is ticking at home, it doesn't tick anywhere, it gives you a safe feeling that you have brought from home into your life or situation.