Acoustic monitoring-and-burglar alarm for bathroom window, has sensitive microphone for acoustic monitoring, control center that is provided as heart of alarm, and amplifier that is arranged adjacent to functional units of alarm

摘要

The alarm has a sensitive microphone that is provided for acoustic monitoring, and an amplifier provided for acoustic information that is supplied from the microphone. A control center is provided as heart of the alarm, and the amplifier is arranged adjacent to functional units of the alarm. Switches are provided for activating the alarm. Noises that arise during break-in attempt of the bathroom window are led to the microphone, and then led to a set of loudspeakers, which are placed at various places of a house such as in front of the house, back of the house and also in bed room.