AJ-40 Audio Jammer Voice Privacy Device

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  • Secures conversations
  • Protects against audio espionage
  • Helps block voice recording
  • Rechargeable with up to 6 hour runtime
  • Easy to use
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AJ-40 Voice Privacy Protection Device
Our Audio Jammer Voice Privacy Device protects your conversations from recorders, bugs and other types of electronic eavesdropping.

The AJ-40 protects conversations against any microphone-based eavesdropping device including RF transmitters (bugs), hard-wired microphones, contact, and shotgun microphones. The AJ-40 also protects against microwave or laser reflection types of eavesdropping devices which monitor the sound waves reflecting off of glass surfaces such as windows.

The sound from the AJ-40 constantly varies in frequency and amplitude. All the eavesdropper will hear is a loud hissing noise. The convenient push button control lets you select the level of protection for each situation. One unit will protect up to 200 sq. ft. For protecting rooms larger than this, we recommend an additional AJ-40 for each 200 sq. ft. of area.

Easy to Use

To use, simply turn on the AJ-40, adjust the volume to the desired level (we recommend starting at half way), and place the AJ-40 near the source of the speech or conversation.

The AJ-40 is rechargeable, offering 3-6 hours of continuous use - depending on the volume level selected. Recharge time is just under 2 hours.

Extra Information

Capri Electronics
Voice recording protection:
Bug/transmitter protection:
Ease of Use:

1 Reviews

  • Posted by Tobin Davenport on Feb 5th 2020


    Good insurance for conversation privacy

    We provide protective services for corporate clients, and use the AJ-40 to protect sensitive information from being recorded by phones and/or small recorders. We usually bring 3 in our case, and set them up in a triangle pattern around the speaker. Will raise review to 5 stars if we can get battery life to 8 or 10 hours, but for now we just plug them in if the meeting or speech goes over the 4 or 5 hour mark.