CUL-01 Ultrasonic Speaker has 33 ultrasonic emitters to avoid unauthorized cell phones to

record crucial and confidential information during meetings. It has unattractive appearance and

is suitable to be placed in a room or can be portable to work because of its built-in battery inside.

The best interfering microphone performance when CUL-01 emitters exactly face a phone’s

speaker because the emitters affects the microphone directionally.

Specification

 Ultrasonic emitters:33 pcs

 Dimension: 315mm×57mm×55mm

 Operation time with built-in battery:2.5hrs

 Remote control to turn on /off the device

 CUL-01 can interfere iphone’s speaker up to 2 meters

when the emitters exactly face the phone’s speaker.