| Phone Link 500 is the "No Phone
                                Line" telephone entry system, allowing you
                                to use your existing telephone line without creating
                                and addition to the phone bill. The American Access Systems,
                                Inc. Phone Link 500 telephone entry system is
                                constructed using a heavy gauge, powder coated
                                enclosure and stainless steel faceplate and is
                                designed to be either post of surface mounted. Functions available with the Phone
                                Link 500 allow the user to conveniently screen
                                entrants from the security of a telephone inside
                                the home or office. When a guest presses the call
                                button, a double ring alerts the people inside
                                that someone is at the gate, rather than |