What you need is an indirect object pronoun, placed before the verb. Then, if you want to emphasize the indirect object, you would add the indirect object itself (in addition to the pronoun). Since the indirect object is a person, the personal 'a' is used to form it, as you thought, but then you need to use a prepositional pronoun for the emphatic 'me'.
Give it another try.
A las nueve de la mañana, el despertador ...
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