VT-316 Desktop Signal Protector with Ultrasonic Mixing for Meeting Security
The VT-316 sits on a meeting table and prevents phones and voice recorders from capturing usable audio, using ultrasonic mixing across 72 probes. It is inaudible to people in the room and emits no electromagnetic radiation. Interference distance is beyond 2 metres for a Huawei Mate 40 and beyond 1.5 metres for an iPhone 12, measured at 70 dB.
Key benefits
- Ultrasonic mixing across 72 probes for omni-directional coverage
- Inaudible to people in the room and no electromagnetic radiation
- Three adjustable levels of ultrasonic mixing power
- Up to 32 units linked by Bluetooth or RS232 for a large room
- Compact at 325 x 96 x 64 mm and approximately 730 g
Problems it solves
- Phones and recorders cannot be reliably confiscated at the door
- Audible masking noise makes a meeting impossible to hold
- One unit cannot cover a large room or long table
- There is no record of whether protection was active during a meeting
Who it is for
- Organisations holding commercially sensitive negotiations
- Facilities that must protect information in fixed meeting spaces
- Security managers networking several rooms under one system
Application scenarios
- Confidential meeting rooms during sensitive discussions
- Confidential reception areas
- Confidential offices
- Negotiation rooms where recording is a known risk
Technical features
- Bluetooth wireless networking supporting up to 32 slave units
- RS232 wired networking supporting up to 32 slave units
- Meeting Guard network management with status monitoring and historical traceability
- Integration with existing conference management systems
- Interference angle 60 degrees at 1 metre
Specifications
| Whole Machine Power | under 45 W |
|---|---|
| Standard Voltage | DC 20 V (PD 3.0) |
| Interference Objects | Android phones, Apple phones, voice recorders, eavesdropping devices |
| Interference Distance | Huawei Mate 40 over 2 m at 70 dB, iPhone 12 over 1.5 m at 70 dB |
| Probe Quantity | 72 |
| Interference Angle | 60 degrees at 1 m |
| Communication Interface | BLE and RS232 |
| Wireless Networking Distance | over 10 m |
| Electrostatic Level | Contact 6 kV, air 8 kV |
| Weight | approximately 730 g |
| Colour | Silver grey |
| Dimensions | 325 x 96 x 64 mm |
| Operating Temperature | -10°C to 45°C |
| Operating Humidity | not more than 85%, no condensation |
Figures are those published by the factory for this model. Where a value is shown as TBC it is not published, and we will confirm it with the factory before you order rather than estimate it.
Quality control
- Ultrasonic noise interference with no electromagnetic radiation, complying with national safety industry standards
Customisation options
- Three adjustable ultrasonic mixing power levels
- Bluetooth or RS232 networking for up to 32 units
Compared with other models in the range
A non-linear junction detector such as the VT-801 finds a recording device before a meeting starts. The VT-316 works the other way round: it assumes a device may be present and stops it capturing usable audio. In a high-sensitivity room the two are used together.
Use guide
- Place on the meeting table within the coverage angle of the participants
- Set one of the three mixing power levels for room size
- Link additional units by Bluetooth or RS232 for a long table, up to 32 in total
- Use the Meeting Guard system to confirm units were active during a session
- Operate between -10°C and 45°C at under 85% humidity
Product images
Where this product is used
Part of Ultrasonic Recording Protection · typically specified for:
VT-316 Desktop Signal Protector with Ultrasonic Mixing for Meeting Security FAQ
Can people in the room hear it
No. It uses ultrasonic noise interference, which is not perceptible to the human ear, and emits no electromagnetic radiation.
How far does the protection reach
Over 2 metres against a Huawei Mate 40 and over 1.5 metres against an iPhone 12, measured at 70 dB.
Can several units cover a large room
Yes, up to 32 units can be linked by Bluetooth or RS232.
Is there any record of use
The Meeting Guard network management system provides status monitoring and historical data traceability.
What power does it need
DC 20 V (PD 3.0), under 45 W.
How big is it
325 x 96 x 64 mm and approximately 730 g, in silver grey.
Can it integrate with our conference system
The management system is designed to integrate with existing conference management systems. Send us the details on WhatsApp.
Quotation for the VT-316 Desktop Signal Protector with Ultrasonic Mixing for Meeting Security
Send your destination port and quantity. We will come back with price, lead time and what documentation the factory can supply for your market.