Room Monitoring Surveillance System

The MGT 2010 Laser Monitoring System / Acoustic Room Monitoring System is a Professional Laser Microphone - Listen Through Windows Laser Microphone and it is used for an acoustic surveillance, and observation of a room by means of an invisible laser beam.

The unit takes profit of the fact, that any sound inside a room causes vibrations of the window panes.

With the laser transmitter, a beam of parallel infrared laser light, is pointed at the window pane.

The reflected laser beam, is modulated from the vibrating window pane and then received by the laser receiver.

It is then electrically selected, filtered and the remaining light will be eliminated.

The beam is amplified, demodulated and converted into acoustical signals.

The spoken word inside a room, can thus be monitored and recorded.

The MGT Room-Microphone System consists of an amplifier, preamplifier, and microphone.
The amplifier unit powers the microphone phantom via a two-wire cable.

The amplifier unit has a regulated headphone jack and a line output. You can set different bandpasses using different high-pass and low-pass settings.

Users can alter the amplification of the room microphone system with a gain control with overmodulation display (CLIP) for the best line output control.

The amplifier unit is powered by either an inbuilt 9 V block battery or an external voltage source (6-12 V DC).