Spec Sheet Preview: Flush Wall-Mounted System - Ideal for HighSecurity Locations Monitoring the activities of inmates and patients in high-security or sensitive types of areas require a special kind of communication system. The system must be sensitive enough to deliver clear, intelligible communications in high-ambient noise environments. It must be durable enough to withstand a tough environment. And it must provide a measure of control for those responsible for the inmates or patients. The Alpha Communications®/Norcon TTU-5 is specifically& …