SNG 2.0 noise generator

SNG 2.0 is an acoustic noise generator with the possibility of connecting up to 100 piezo transducers. SNG 2.0 serves to protect the premises from eavesdropping from the outside.

SNG 2.0 noise generator

The SNG 2.0 noise generator is an effective tool to prevent eavesdropping of the room from the outside. SNG 2.0 ensures the privacy of your negotiations and prevents basically all external attacks.

What SNG 2.0 will protect against:

• before eavesdropping through the wall or contact microphones
• before sophisticated laser intercepts

Laser eavesdropping is currently the biggest threat to your privacy. The latest models are capable of eavesdropping on entire houses, at a very long distance, and they don't even require aiming perpendicularly at windows or walls.

Principle of operation of laser interception

Any sound, including the human voice, causes vibrations, and these vibrations are transmitted to walls, windows or furniture in the surroundings. Laser tapping detects micro-vibrations from a given surface and converts them back into voice.

The only reliable protection is the use of a noise generator with a connectable piezo transducer that vibrates the walls, windows, ceilings, floors or furniture in the room.

The SNG 2.0 is equipped with two separate outputs for which the intensity can be controlled individually. As a rule, for piezo transducers installed on windows, it is enough to use a lower power, and on the contrary, for those installed on the walls, use a higher power.

Package contents:

• noise generator SNG 2.0
• 48V power adapter

Piezotransducers are not part of the package, and can be delivered at a price of €1.20/pc.

Recommended number of piezo transducers

On a surface that conducts vibrations well (e.g. plasterboard), when set to maximum power, it achieves effective interference up to a distance of approximately 2.5 meters from the piezo transducer. On a concrete wall, the maximum interference range is 0.5 - 1 m.

Installation of piezo transducers on individual parts of the room:

• We generally recommend, for securing walls , floors and ceilings, install piezo transducers at a distance of 1m from each other.
• On securing windows and other glass surfaces, we recommend installing one piezo transducer in the corner of each window pane.
• On door security as a rule, one piezo transducer installed in a corner is sufficient. However, this does not apply to padded doors, which significantly absorb vibrations.

It is true that the denser the piezo transducers you install, the less power you need to put into them, and the less disturbing sound will enter the room. Conversely, if you use few piezo transducers (e.g. at a spacing of 2.5 m), it will be necessary to put more power into them, and the interference will be audible not only in the walls but also in the room.

Due to the fact that the interference range is different for each material, and the optimal power setting is very subjective, we recommend to get any noise generator together with listening through the wall , with which you can easily check the functionality in your conditions, and adapt the installation accordingly.

Comparison of noise generators

	Performance	Piezo transducers	TRN (vibrating pucks)	Loudspeakers	A mix of voice samples	Integrated speaker and battery	Power supply
SNC-NG200P	15W						12V
DNG-2300	2x 10W		up to the 24th	up to 12			12V
SNG 2.0	2x14W	up to 100 pcs	up to the 24th	up to 12			48V
SNG 2.0 HighPower	2x 45W	up to 1,000 pcs	up to 216	216			15-30V
SNG 2.0 VoiceMixer	1x 90W	up to 1,000 pcs	up to 216	216			15V