Burglar Detention Alarm
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Burglar alarms like this one are designed to alert the user to danger. Sensors are connected to a control unit through a low voltage wiring that interacts with a response device.
Keywords
bell, signal, protection, burglar, intrusion, safety alarms, alarm systems, signaling device, buzzerGalleries
Health and SafetySource
Government Printing Office The Official Gazette of the United States Patent Office (Washington, DC: Government Printing Office, 1895)
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