LOUD-SPEAKER FIRE ALARMS
EDINBURGH’S NEW DEVICE Loud-speaker fire alarms have been installed in the streets of Edinburgh. They are said to be quite easily worked by nervous people who cannot work a telephone, or even by children. Another claim for the instruments is that they prevent maliciously inclined people from sending false alarms. The voice of the duty fireman at the central fire station can be heard distinctly above the roar of traffic, and his questions about the existence of a fire would at once b© heard and answered by passers-by. Anyone wishing to report a fire breaks a small glass window in the alarm. Simultaneously the door of the instrument opens and exposes two apertures. One has painted above it the words: “Wait. Fireman will speak,” and the other, “Reply here.” When the glass is broken a bell rings in the fire station duty rooms, and. although the fireman replies through an ordinary telephone transmitter. his voice can be heard 12ft from the alarm. Both apertures are really loudspeakers, and, when the person reporting the fire hears the voice from the fire station through one, he replies through the other. Police and ambulance calls can also be sent through these alarms, the fire station transmitting them to the right quarter.
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https://paperspast.natlib.govt.nz/newspapers/SUNAK19280310.2.112
Bibliographic details
Sun (Auckland), Volume I, Issue 300, 10 March 1928, Page 10
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211LOUD-SPEAKER FIRE ALARMS Sun (Auckland), Volume I, Issue 300, 10 March 1928, Page 10
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