FIELD: engineering of devices for ensuring safety of premises from intruders.
SUBSTANCE: in accordance to invention, premises protection system includes a doorbell and doorbell button, connected to electric power grid, to electric power grid a computer is connected in standby mode, and a time relay is connected to doorbell button, output of which through decreasing transformer and rectifying block is connected to one of personal computer ports. To audio output of personal computer one or more loudspeakers are connected, and in personal computer memory (hard drive, CD/DVD-ROM, etc.) several dog barking fragments are recorded and a player program. Imitation of dog moving is made due to stereophonic or quadraphonic recording of barking fragments.
EFFECT: lower costs of premises protection equipment.
2 cl, 1 dwg
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