Upgraded ultrasonic anti-recording device audio recording blocker
Par un écrivain mystérieux
Description
Most devices are rendered useless by the “Ultrasonic Audio Blocker”. It is effective against any microphone based eavesdropping device including: tape
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Ultrasonic Audio Recording Blocker | White Noise Generator | Powerful Microphone Suppressor Device | Prevent Voice Recording | BDA-3 (FCC, CE & ICES
How To Block Audio Recording Devices?
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