
Noise blockers are used to block long-distance and hidden devices in your home. The reason this works is that you create an acoustic coupling between the wall and the glass, allowing sound waves to travel from one side to the other. even with them in your pockets! (The size of tape jack is 3.5mm) Do not take off earphone, this is the antenna of micro phone. Places like tissue boxes are good to hide sound jammers. How do you get started spying One method is a simple glass held against the wall.
#LONG DISTANCE SPY LISTENING DEVICE PORTABLE#

The required conversation can be heard simply by turning on the switch, since the frequency is fixed by the quartz oscillator.


No conventional wireless microphone that uses a FM radio for listening can possibly compare. The performance and ease - of - operation of this unit are unbeatable. Keeping you in touch, at a single touch! The is a combination transmitter & receiver listening device that contains a special quart receiver as well as a quart oscillator transmitter.
