The TTU-4 Talk Thru communication system is particularly suitable for low ambient noise environments that require an unobtrusive, yet tamper-resistant voice communication system.

The TTU-4's counter-mounted design eliminates the need for cutting into a barrier. Its low-profile installation adds a personal dimension to such situations as inmate-to-visitor communications.

All the components including the microphones are housed in the sleek, compact units to avoid the hazards that might be encountered in a high-security environment.

HOW IT WORKS…
The TTU-4 incorporates the same high-quality electronics as the basic Patent Pending (#4049911) Norcon TTU-1 Talk Thru system. It is a Vox System, enabling the inmate and the visitor to have hands free two-way communication.

The Norcon TTU-4 provides clear communication, shaping the sound for maximum intelligibility. Its compression circuitry decreases loud, annoying sounds. Since the TTU-4 is designed for applications in security areas, all controls and microphones are recessed to minimize unauthorized adjustment and tampering. All exposed hardware is temper-resistant.

HOW TO INSTALL…
The TTU-4 comes ready to operate. The prism units are quickly and easily mounted on the counter-top on opposite sides of the barrier. They can be positioned back-to-back (as shown) or randomly. The unit with the controls goes on the visitor side of the barrier. Tamper resistant screws are used for both units. A special tool is furnished for these screws. There are two-ways to install the TTU-4: either run the cable between the units through a small hole in the barrier, or under the counter-top.

The TTU-4 uses a continuous-duty, 117-Volt power supply which is stepped down to 15 Volts.