Secure Voice Telephone Scrambler

and land-line telephones. PLEASE NOTE: A minimum of two units are required for the system to operate. However, there is no limit to the number of units that can be used in conjunction with the original pair. Individual units can be purchased as needed. ... Spy Shops of Fort Lauderdale Florida specializes in spy equipment such as GPS Trackers Video Cameras Private Investigation Secure Cellular Phones DVR Night Vision Bug Sweeps Voice Recorders Counter-Surveillance and Audio Surveillance shop ...