AJ-34 Audio Jammer Noise Generator

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  • Secures conversations against audio espionage
  • Protects against audio recorders
  • Protects against audio transmitters
  • Easy to Use
  • Uses 1 9V battery
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The AJ-34 Audio Jammer
Protects private conversations from microphones, voice recorders and audio transmitters.

  • Keeps important conversations private
  • Generates oscillating frequencies which hide voices from hidden microphones and bugs
  • Protects sensitive company information from corporate espionage

Noise Generating Audio Jammers have been used by corporations and those in sensitive positions for decades, and are one of the best ways to keep conversations confidential. Effective against any microphone based eavesdropping device including tape recorders and RF transmitters, as well as hard-wired, contact and shotgun microphones.

The AJ-34 also protects against microwave or laser reflection pickups and microphones. The white noise the AJ-34 emits varies randomly in frequency and amplitude, and cannot easily be filtered - the only sound the eavesdropper will hear is the white noise.

The convenient gain control lets you select the level of protection for your situation. One unit will protect up to 150 Sq ft. For protecting rooms larger than 150 Sq ft, we recommend an additional jammer for each 150 sq. ft. of area. The illustrated instructions show suggested placement for different types of rooms and situations so that you can use the AJ-34 effectively.

The AJ-34 is powered by one 9V battery (included).

Easy To Use

To start protecting conversations, simply turn the volume knob clockwise so that white noise is generated from the internal speaker until the desired volume is achieved. Speak out loud to test the volume and make sure that you can still hear your conversation clearly. With proper volume adjustment, you'll be able to hear your conversation fine, but unwanted surveillance recorders and transmitters won't.


  • AJ-34 Audio Jammer
  • 9V battery
  • Instruction manual

Dimensions: 4" x 2.5" x 1.5"

Weight: 7 ounces

Extra Information

Capri Electronics
Voice recorder protection:
Audio bug protection:
Battery type:
Ease of use:

1 Reviews

  • Posted by Dan Goodman on Feb 6th 2020



    Good product works like its supposed to, tested with 2 voice recorders and a cell phone, rechargeable battery would make it better