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A large number of fire alarm signal boxes were placed in various locations throughout Yonkers.
The resulting increase in current flow is interpreted and processed by the control unit as a confirmation of the presence of smoke and a fire alarm signal is generated.
From 1855 to 1869, he was superintendent of the Fire Alarm Telegraph Company of Boston, Massachusetts and was the first to take out patents on the use of reversed currents in connection with the fire alarm signal system.
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