KOL 15 can simultaneously disable the microphones of up to 15 mobile phones and two tablets, by generate ultrasonic sound, which effectively protects a meeting held in a room and keeps it discreet. The system works by connecting to 220v electricity as well as to an internal battery that allows it to operate for 10 hours continuously.

The system blocks any ability of recording the conversation inside the room through the cell phone of one of the participants, as well as any attempt to intercept a cell phone by an outside party. If a call is received while the phone is inside the box, it will ring, but it will not be possible to answer it until the phone is out of the box.

The system blocks the microphones of any type of phones / tablets.