FIELD: protecting devices.
SUBSTANCE: invention relates to a device for protecting against unauthorized wiretapping. The aforementioned technical result is achieved by the fact that the device for protection against unauthorized wiretapping in the room additionally contains a call signal generation unit and a phototransistor circuit-electronic switch, while the input of the call signal generation unit is connected to the output of the phototransistor circuit-electronic switch, the input of which is connected to the first the output of the power supply, the second output of which is connected to the first inputs of the switching unit and the control unit, while the output of the call signal generation unit is connected to the telephone set.
EFFECT: increasing the efficiency of protecting speech information from leakage through technical channels, simplifying the device circuit.
1 cl, 1 dwg
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