F-19 Anti Recorder Microphone Ultrasound Wave Generator Stops Phone Recording Listening Devices

The F-19 ultrasonic acoustic sounds wave anti-recording generator guard emits low frequency ultrasound to interfere with microphones. Protecting you from phone recording, digital recorder, listening device, hidden camera microphones. It interferes with any type of microphone used to monitor or record voices / sounds / audio. It is manually operated, remote control operated and voice activated operated. When it hears you speak it activates to prevent recording taking place.

Model F-19 is designed to place in room where and place as near to suspected listening recording device. Positioned between conversation taking place and microphone is best. Operates whilst connected to charger and battery powered with 4 hours working time.

Place where sensitive or private conversation is to take place and switch on to emit ultrasonic acoustic sound waves that override microphones nearby.

The distance covered is 2-6 square metres over 180º coverage and more effective the closer it is to microphone. No voice/conversation or sound can be heard when used effectively. You may hear a mild hum when within 1 metre of generator and is tolerable. However long period use can become uncomfortable to some users. Not recommended to use with pets nearby as they can hear ultrasonic sound more clearly than humans.

The principle of the anti recording guard is to emit ultrasound acoustic sound waves to interfere with normal function of microphones. Its core technology is an advanced algorithm and chip which generate and run ultrasonic sound waves targeting sound frequency of speech.

1. Anti-recording device / anti-eavesdropping device.
2. Easy to use: two output gears, shielding angle 180 degrees.
3. Working principle: Ultrasound acoustic wave interference
4. Application: meeting, Business interview, Personal communication, Confidential / private conversation.
5. Function: protect your privacy and prevent recording / eavesdropping.