The MNG-3000 Skeller generates white acoustic noise in the speech frequency range of 250-4500 Hertz. Sound interference is put onto the recording and makes its quality worse. Due to a uniform distribution of white noise along the whole sound range, clearance of the obtained recording is impossible. The unit should be placed near the designated person to be protected. A digital-analog synthesizer is used to produce the noise.
For the best effects you need 2 pieces.
Decreases efficiency of voice recorders (intelligibility drops by 90%)
Influences radio microphones and stethoscopes with an efficiency of up to 95%
Absolutely harmless to your health – no electromagnetic or ultrasound radiation
Portable, can be prepared for usage within a second
Has a durable case
Powered by one 9V battery
Principal of work White noise
Frequency response 250-4600 Hz
Dimensions 2.7 x 5.5 x 8.6 cm
Controls Power on/off, Volume
Indicators Power, Volume (10 segments)
Supplied set Unit, leather case, battery, user manual