ANGEL EXECUTIVE Ultrasonic Microphone Jammer Briefcase

Description of the article « ANGEL EXECUTIVE Ultrasonic Microphone Jammer Briefcase »

ANGEL EXECUTIVE: an ultrasonic jammer briefcase for professional discussions

Negotiations, strategic conversations and management meetings can involve information intended to stay between participants. The ANGEL EXECUTIVE ultrasonic microphone jammer briefcase places speech protection equipment in a familiar work accessory that can travel between appointments.

Part of the ANGEL commercial range, EXECUTIVE is distinguished by the integration of its ultrasonic system. The carrying format houses the equipment itself, avoiding a separate exposed jammer enclosure in the centre of the table.

66 transducers concealed behind special fabric

The briefcase incorporates 66 ultrasonic transducers hidden behind a special fabric. This conceals the emitters while maintaining a dedicated area for ultrasound emission. The outside does not look like a visible row of technical loudspeakers.

The arrangement provides visual discretion for offices, meeting rooms and business travel. Keep the emitting area clear: a jacket, another bag or furniture placed in front can change the result. The transducer count alone does not establish uniform coverage in every direction.

Action on audio capture by susceptible microphones

Ultrasonic jamming aims to reduce the intelligibility of recordings made by microphones susceptible to this technique. Action is stated against most spy microphones and phone microphones. It concerns sound capture, with results depending on the equipment exposed and how it is positioned.

A phone, recorder and concealed microphone may respond differently. Some devices may still record intelligible speech. The briefcase does not detect microphones, and switching it on does not itself verify that usable recording has been prevented.

Up to 10 m stated: plan the placement around the meeting

The stated maximum distance is up to 10 metres. Use it as an indication when planning placement, rather than a guaranteed protection radius. Distance to the microphone, orientation, obstacles and room geometry all influence effectiveness.

For a sensitive discussion, consider the occupied seats and the equipment present. Do not infer complete room coverage or action through a wall from the maximum figure. A representative recording test in the actual setting is the most useful check.

Around 6 hours of stated battery life for mobile use

The stated battery life of around 6 hours allows several work sessions to be considered without needing a socket at every installation, subject to sufficient charge and operating conditions.

Check the power before leaving and allow a margin for meetings that run longer. The stated duration does not replace a charge check. Follow the supplied charging procedure.

Practical advice for confidential meetings

1. Prepare before the appointment. Check charge level, controls and the instructions.
2. Keep the emitting areas clear. Do not cover the fabric over the transducers or place the briefcase behind an obstacle.
3. Test in the real setting. Make a sample recording with your own devices at the intended positions, then listen to the result.
4. Recheck after layout changes. Moving the phone, briefcase or participants can alter effectiveness.
5. Combine it with confidentiality procedures. Control equipment brought into the room and access to the meeting. A successful test on one device does not prove effectiveness against every microphone.

Compare the available formats in our ultrasonic jammers and Faraday bags selection.

Strengths and limitations

Frequently asked questions