Ultrasonic Microphone Jammer SEL 08 for Private Conversations

Keep your conversations private, even in high-risk environments. The SEL 08 blocks nearby microphones so your words stay between the people in the room.

It creates a controlled space where recordings turn unusable, giving you confidence during meetings, negotiations, or personal discussions.

Take control of who can hear and record you

✅ Protect conversations within 0.5–4 meters so sensitive discussions stay confidential

✅ Stop recordings from phones, recorders, and hidden devices by making speech unintelligible

✅ Maintain a natural environment with silent ultrasonic operation

✅ Activate from up to 20 meters away for quick, discreet control

✅ Run for 4–5 hours continuously without needing constant power

✅ Cover a wide 85° area horizontally and vertically for better room coverage

✅ Use in offices, cars, or travel setups without drawing attention

The SEL 08 emits ultrasonic interference that microphones cannot filter out. While people hear conversations clearly, recording devices capture distorted, unusable audio. This makes it effective against smartphones, professional recorders, radio microphones, and common surveillance bugs.

Place it on a table during meetings, keep it nearby in a car, or conceal it inside a bag. Its compact 20 × 12 × 4 cm size and 0.5 kg weight make it easy to position wherever privacy matters most.

With 8 ultrasonic transducers, the device creates consistent coverage across the target area. You can power it via its built-in battery or external supply, and use the remote control to activate protection instantly without interrupting the flow of conversation.

Compared to relying on trust or manual device checks, this provides active control. No noise, no interruptions, and no need to locate hidden recorders—just consistent protection when it matters.

Secure your conversations and keep sensitive information under your control.