 Listen Through Wall Device£219.00 When access to the subject premises is impossible or difficult, the listen through wall device is ideal. The extremely sensitive, high gain microphone, when attached to a wall, door, floor, window or other obstruction, will pick up conversation or sound from the other side. Works through obstructions of up to 30 cms thick. |  | |  Parabolic Microphone & Monocular£99.00 This super parabolic mic electronic listening and digital recording device is ideal for hearing and recording from distance. It is ideal for distant surveillance when you are unable to get too close. |
