ɐ ɹᵻsˈiːvɚɹ æt fˈaɪɚ hɛdkwˈɔːɹɾɚz ɐnˈaʊnsᵻz ðɪ ɐlˈɑːɹm θɹuː flˈæʃɪŋ lˈaɪts ɔːɹ tˈoʊnz, ɔːɹ vˈaɪəɹ ɐ pˈɛn ɹᵻkˈoːɹdɚ, ænd ðə bˈɑːks nˈʌmbɚɹ ɪz mˈætʃt tʊ ɐ lˈɪst ʌv bˈɑːks loʊkˈeɪʃənz.
A receiver at fire headquarters announces the alarm through flashing lights or tones, or via a pen recorder, and the box number is matched to a list of box locations.