The TTU Series is a 2-way, hands-free audio system that provides high-quality personal communication between people separated by security windows, ticket windows, or isolation barriers. It is the most widely used system of its type in the U.S., and the world.

The TTU system permits hands-free, 2-way communication between the booth attendant and the customer. Vox circuitry facilitates ongoing, clear, 2-way conversation at all times - as if the two parties were together in the same room.

Several models are available in 117vac or battery operation, in standard and bullet-resistant models, and for thru-the-glass or counter top installation. Optional 220VAC powered versions are also available on special-order (at additional cost)

the TTU system provides clear communication even in environments with high ambient noise by shaping the sound for maximum intelligibility. Its compression circuitry decreases loud, annoying sounds.

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