Ultrasonic Privacy Shield Voice Recorder Jammer | 180°

Ultrasonic Privacy Shield Voice Recorder Jammer | 180°

The Ultrasonic Privacy Shield Voice Recorder Jammer is an ultrasonic voice recorder blocker, also described as a voice recorder jammer, for controlled testing of exposed microphones. It emits high-frequency ultrasound that may appear as white-noise-like distortion in recordings made by compatible smartphones or digital voice recorders. The listed coverage angle is 180°. The supplier has not published a verified microphone-interference distance. Unlike an RF jammer, this device targets microphone audio rather than cellular or WiFi signals.

Product Features

• Emitter array: 20 ultrasonic emitters directed across a manufacturer-listed 180° sector
• Microphone effect: Ultrasound can create unwanted noise-like artifacts in compatible exposed recordings
• Modes: Three operation modes including remote switch control

Technical Specifications

• Recorder interference distance: Not specified by the supplier; do not confuse with remote-control distance
• Directional ultrasonic coverage: 180° (supplier-stated; not a guarantee)
• Ultrasonic emitters: 20
• Coverage angle: 180°, supplier rating
• Emitter count: 20

Applications and Limitations

For consent-based microphone response demonstrations, authorized privacy-equipment comparisons and controlled audio tests involving smartphones, digital voice recorders and recording pens with exposed microphones. Results depend on microphone response, microphone orientation, distance and room surfaces. IMPORTANT: This ultrasonic voice recorder blocker acts on microphones exposed to its ultrasonic field only. It is not expected to work when the recorder is inside a pocket, handbag, closed bag or behind other acoustic barriers. It cannot prevent the camera from recording video, does not erase files or encrypt recordings, and cannot guarantee distorted audio on every microphone.

Placement and Operation

Place the emitter on a stable surface with the ultrasonic array facing the uncovered recorder microphone, ideally at a comparable height with a clear sound path. Select a supported mode and evaluate a short sample with the target model. Ultrasound does not reliably pass through clothing, pockets, handbags or closed cases; neither full interference nor any particular range is guaranteed.

Package Information

Ultrasonic Privacy Shield Voice Recorder Jammer main unit; remote control when supplied for this model. Verify cable and accessories against the selected product package.