COMPU-TTY KA300 Alarm Monitor System for Deaf or Hard of Hearing Complete NOS.

The Compu-TTY KA300 Alarm Monitor System is an emergency alert system designed for use by individuals who are deaf or hard of hearing. This system connects all existing alarm devices in within a small, medium, or large building with a wireless link system. The system covers a broad area, manages up to 1,024 different codes, and displays up to three alarm channels. A bright strobe light, a loud speaker, and a strong bed shaker (all included)provide alerts at all times. Connect all existing alarm devices in your dwelling together with the wireless link system. Cover abroad area when being able to display up to three alarm channels. A Time Condition signal filter reduces nuisance false alarms. POWER: Uses standard current with battery backup. OPTIONS: Weather alert radio with attached transmitter to transmit incoming emergency messages to the alarm monitor.

This is new old stock.  Everything inside case looks to have never been used or opened.