The red and green wires are the only ones used. A complete instruction sheet is included. The unit is preset and tested prior to shippment. It comes with a double stick foam pad for easy mounting. Don't think eaves dropping couldn't happen to you.
Many people enjoy monitoring others as a hobby.
The tsunami of miniature TV cameras and wireless video transmitters has hit our shores. In 1967-68, audio eavesdropping, bugs and wiretaps were in the very same position. History will repeat itself. Next stop, Capitol Hill - but, don't count on a law for your protection. We can detect, display and document wireless covert video.