A covert listening device, more commonly known as a bug or a wire, is usually a combination of a miniature radio transmitter with a microphone. Bugging, also known as wiretapping, is a common technique used in surveillance bug, espionage o…

Some times in an installation the ceiling is too high and the floor is too far down such as in a shopping precinct, over the escalators with the demand to mount the monitor at a height the only option to be had is to mount the unit from a …