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Home >> Surveillance Shop >> What are Radio Transmitters ??
Transmitters are usually easily hidden devices that listen to room or telephone conversations. Sometimes they are disguised as pens, calculators, electrical or telephone sockets etc.
The conversation is invisibly transmitted over the air waves to a radio receiver depending on the transmitters range, the radio receiver must be located within that range to ensure clear reception.
The range given will be reduced if the radio signal has to pass through concrete, metal or double glazing on windows.
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