These units acoustically couples to any telephone instrument handset and protects your telephone conversations from eavesdropping.

Use it in the office, home, pay telephone or cellular car phone. Automatically scrambles your conversation in code combinations. The privacy codes are set by the user and can be changed at will.

Operates on a 9 volt battery. Clear natural sound quality. Fits all handsets: standard, mobile, cellular and pay phones...13,122 user programmable handshake access codes...Four factory code groups totalling over 52,000 possible codes...

Protects your entire telephone conversation from wiretapping and eavesdropping devices...