Ultrasonic Audio Jammer with Bluetooth 5.0 Speaker 20W

This ultrasonic microphone blocker combines ultrasonic jamming technology with a high-quality Bluetooth speaker; such a dual-function audio jammer is rare.

Dual Function: Anti Listening Device & Bluetooth Speaker

The signal blocking equipment for videoke can quickly switch between two operating modes:

Bluetooth Speaker Mode

• Equipped with dual neodymium magnetic drivers for clear and powerful sound output.
• Delivers 360° surround stereo audio for music playback, phone calls, meetings, and presentations.
• Supports lossless Bluetooth 5.0 transmission for stable and high-quality audio performance.

Silent Interference Mode

• Uses 20 kHz–40 kHz ultrasonic frequency technology to interfere with nearby smart device microphone sampling.
• Activated easily through the dedicated mobile app or remote control.
• Helps make unauthorized recordings unusable while maintaining normal Bluetooth and Wi-Fi connectivity.

Portable Design with Long Battery Life

The equipment that blocks audio features a compact structure with a built-in rechargeable battery, making it convenient for flexible use in different locations.

• Battery: Built-in 6600mAh lithium polymer battery
• Charging: 45W PD 3.0 USB-C power adapter
• Output Power: 20W
• Interference Range: Up to 5 meters

The powerful battery capacity provides reliable operation, while USB-C fast charging makes daily charging more convenient.

Application Areas:

Conference rooms

Executive offices

Private meeting spaces

Business meetings

Why choose this conference room anti-recording jammer?

In fact, privacy devices don't always need to look complicated.

When you need entertainment, you can enjoy high-quality audio; when you need to protect your voice privacy, you can switch to ultrasonic jamming mode.