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Home >> Surveillance Shop>> Through the wall listening devices >> SM33 Listening through the wall device
| SM-33 | |
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| DESCRIPTION | |
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Ideal for listening through walls, doors, floors or windows. By using a special contact microphone this unit actually turns the surface being penetrated in to a microphone allowing the user to hear sounds and conversation made on the other side of a wall. Earphones are included and the amplifier has the facility to attach a recorder. It has the capacity to listen through 300mm of concrete.
For the same device, however built in ceramic, visit the SM55 page. |
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