Ultrasonic Voice Recorder Suppressor
255º suppression angle, mobile communication jamming

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Weight (in package), kg: 1.3    Packing size, mm: 300х150х40

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  • Voice suppression method:
    - ultrasonic radiation;
  • 31 communication standards suppression
  • Installation location:
    - under the table

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«Ultrasonic-Sektor-24-GSM» is a suppressor of all types of voice recorders and wireless communications designed for use in office rooms and meeting rooms. The device is mounted under the table, so it does not attract attention and contributes to the optimal distribution of interference in the room.

The device is equipped with 24 ultrasonic emitters, the impact of which on recording devices will not allow recording a conversation. The suppressor will additionally block any data transmission in all modern mobile communication ranges. The suppressor is powered from a 220V network or from a battery (optional), and is remotely controlled.

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Area of use

«Ultrasonic-Sektor-24-GSM» suppressor is intended for use in office and meeting rooms and is installed under the negotiation table. With proper installation, you will be able to make recording, while recording by interlocutors will be impossible. The ultrasonic effect on microphones and voice recorders, as well as the operation of the built-in communication suppressor, will protect the room as much as possible from information leakage.


  • Operation invisible to others. The suppressor is installed under the table and operates silently, so your interlocutors will not be aware of its use.
  • You can record a conversation, but the rest can not! Ultrasonic emitters are arranged in such a way that you are the only one able to record.
  • Ultrasonic Sound Suppression. The suppressor is equipped with 24 ultrasonic emitters impacting the microphone membranes of any recording devices, thereby making sound recording impossible.
  • Data transfer block. The built-in communication suppressor blocks communication in the GSM, Wi-Fi, 3G, 4G, LTE, GPS bands, making it impossible to transmit information.
  • The remote control allows for the remote control of suppressor’s operation, without attracting the unwanted attention.
  • Ability to operate using battery (optional). Allows you to use the suppressor autonomously for up to 2 hours, which will be useful in the absence of a 220V network in the place of use of the device.
  • Protection against laser microphones (optional). At your request, this device can be equipped with special vibro-acoustic emitters that interfere with the remote reading of information off the window glass of the meeting room and provide reliable protection from laser microphones.

Ultrasonic Voice Recorder Suppressor Ultrasonic-Sektor-24-GSM - connection sockets
Ultrasonic suppressor for voice recorders and wireless data transmission Ultrasonic-Sektor-24-GSM
Set of ultrasonic voice recorder suppressor Ultrasonic-Sector-24-GSM


Additional modules
Ultrasonic suppressor of microphones, voice recorders under the table Ultrasonic-SpyLine-24-Light additional piezovibration emitters
Splitter and piezo-vibration emitters



Optimal placement scheme for Ultrasonic-Sektor-24-GSM

Layout of the device Ultrasonic-Sector-24-Light

Technical Specifications

31 Suppression Standard:

Frequency Range: 925-960 MHz


  • GPRS (downlink): 925-960 MHz
  • EDGE (downlink): 925-960 MHz
  • UMTS (downlink): 925-960 MHz
  • GSM-900 (downlink): 925-960 MHz
  • EGSM (downlink): 925-960 MHz

Frequency range: 1805-1880 MHz


  • EDGE (downlink): 1805-1880 MHz
  • GPRS (downlink): 1805-1880 MHz
  • HSUPA (downlink ): 1805-1880 MHz
  • DCS (downlink): 1805-1880 MHz
  • LTE B3 (downlink): 1805-1880 MHz
  • GSM-1800 (downlink): 1805-1880 MHz

Frequency range: 790-826 MHz


  • AMPS / D-AMPS : 790-826 MHz
  • LTE B20 (downlink): 791-821 MHz

Frequency range: 850-894 MHz


  • LTE B5 (downlink): 869-894 MHz
  • GSM-850 (downlink): 869-894 MHz
  • ZigBee: 868 MHz
  • PD868 : 868 MHz
  • CDMA: 850-890 MHz

Frequency range: 2110-2170 MHz


  • IMT-MC (downlink): 2110-2170 MHz
  • W-CDMA (downlink): 2110-2170 MHz
  • HSDPA (downlink): 2110-2170 MHz
  • HSPA + (downlink): 2110-2170 MHz

Frequency range: 2400-2500 MHz


  • Wi-Fi: 2400-2500 MHz
  • Bluetooth: 2450-2485 MHz
  • RC 2.4G (video signal): 2400-2500 MHz

Frequency range: 1570-1610 MHz


  • GLONASS L1 (1st generation): 1602 MHz
  • GLONASS L1 (2nd generation): 1600.995 MHz
  • GPS L1: 1575.42 MHz
  • GLONASS L1 (3rd generation): 1575.42 MHz

Frequency range: 2620-2690 MHz


  • WiMax: 2620-2690 MHz
  • LTE B7 (downlink) : 2620-2690 MHz


  • Ultrasonic emitters: 24 pcs.
  • Communication suppressor: from 5 to 15 meters
  • Angle of attack: 255 degrees
  • External power supply: 12V, 3A
  • Dimensions: 300x150x40 mm


  1. Ultrasonic-Sektor-24-GSM suppressor - 1 pc.
  2. 12V network adapter - 1 pc.
  3. Remote control - 1 pc.
  4. Manual - 1 pc.
  5. Battery (optional)
  6. Vibration protection kit for laser microphones (optional)
€ 514.29
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36400 руб   В корзину

Ultrasonic Voice Recorder Suppressor Ultrasonic-Sektor-24-GSM

Special suppressor under the negotiation table!

24 directional ultrasonic emitters.

You record the conversation, the rest do not.

Remote control - remote control included.

Battery and window protection optional.


25000 руб   В корзину

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