Wall listening device

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Description:

Professional portable allowing eavesdropping on conversations, listening to the solid wall with a thickness of up to 40 inches. Device used in the band pass filters allow you to adjust the characteristics of the wall construction: concrete, wood, reinforced concrete, metal, brick, glass. Eavesdropping enhances the sound to 20 000 times.

With an easy intuitive operation and built-in battery power which can operate at about several hours, the device is perfectly suited to the operational work without getting inside the buildings / facilities.