Transmitter audio signal is connected with the target wire while tracing withiRJ11 interface, which generate a close loop audio signal field around the target wire loop, and the receiver will pick up the signal at the loop or the other end of the wire to find the target wire. This method features long distance and clear sound which helps the users to find the target wires effectively and quickly. In testing the camera the device display the images on the screen via its signal cable so that angle and range of the camera will be adjusted to the best position. This device finds wide application in fields of
camera amounting and wire tracing.