Covert surveillance headsets for Police Tetra Airwaves radios.  An induction loop system allows audio to be “transmitted” to a listener by means of a magnetic field, usually a loop hung around the neck under clothing. It "wireless " but there is no radio signal
Induction loop earpieces are listen only devices and they will not pair with a Bluetooth device.
An audio signal is fed from the audio output of a walkie talkie radio, MP3 player, iPoD etc into the neck loop. The current flowing in the neck loop varies according to the audio signal, producing a magnetic field. The covert earpiece contains a coil which converts the magnetic field back to audio and feeds it to a miniature sound amplifier.
To hold a 2 -way conversation a separate microphone is required as found in our TC4 covert headsets.
Please click here for covert induction earpieces and headsets for non-Tetra security radios
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