Product Specification Sheet APS484

Rev. 08/2017

TTU-7 (2-Piece) 2-Way Talk-Thru Electronic Communications System

The Ideal Counter-Top Communication System where it
is impractical to use the Standard Model TTU-1A-X

Shown with Separate Counter Mounted 'Prism' Style
Control Unit with 18" Gooseneck Microphone


For those times when it's impractical, for various reasons, to mount the inside control section of a communicator into a window, the TTU-7-X is the communication system of choice. The prism shaped control unit of the TTU-7-X is ideal for mounting on a counter top on the interior side of a barrier. The system allows hands free communications through barriers typically found in banks, cashier's booths, ticket windows, information booths and similar environments.

How It Works

The TTU-7-X incorporates the same high-quality electronics as the basic Alpha Communications┬« / Norcon patented model TTU-1A-X Talk-Thru system. It is a vox system, enabling the attendant and the customer to have hands free two way communication.

The TTU-7-X provides clear communication even in environments with high ambient noise by shaping the sound for maximum intelligibility. Its compression circuitry decreases loud, annoying sounds.

How To Install
Installation of the TTU-7-X is a very simple, one-person operation. All that's needed is a 3 to 4 inch cutout in the barrier. All hardware and cable are supplied. Please specify barrier thickness when ordering. The prism unit is quickly and easily mounted on the counter-top on the inside of the barrier, at a convenient location for the user. A power adapter and all cables are supplied.

The TTU-7-X is supplied with a continuous-duty, 117-Volt power supply which is stepped down to 15 Volts. An optional model# 220V-OPTION-N power pack is available for 220VAC primary power applications.

'Talk-Thru' is a trademark of Norcon Communications Inc

  • Clear, 2-way hands-free voice communication (vox).
  • Quality electronic design and engineering.
  • Rugged, tamper-resistant materials.
  • Simple, one-person installation.
  • Compact, contemporary design. Fits any decor.
  • Avoid shouting, repetition, misunderstanding.
  • Export models available.
  • Built in jack for headset.
  • Bullet resistant option available
  • 'X' Suffix on the model number indicates removable XLR microphone
  • Made in U.S.A.

Talk-Thru systems are shipped complete with mounting hardware, instructions, and power supply (AC operated unit), or charger (battery operated unit).

The TTU-7-X Talk-Thru Communicator now incorporates circuitry to automatically attenuate the outside channel. If the gooseneck microphone is not used for a period of 30 seconds, the outside channel volume will be reduced approximately 70%. Normal operation is restored as soon as the attendant speaks into the gooseneck microphone.

The automatic volume attenuation circuit prevents outside noise from bothering the attendant. The TTU-7-X is equipped with a Jack to add a compatible headset or wireless microphone. Simply plug the headset in and communicate. The headset contains light weight construction, a boom mic and a single speaker that covers one ear.
  1. Outside Assembly: 5" dia x 1/2 in. deep solid aluminum, clear Anodized finish, tamper resistant.
  2. Inside Assembly: 6" W x 2.375" H x 2.375" D Machined aluminum, clear Anodized finish, tamper resistant.
  3. Mounting: Window / Counter-top
  4. Inside Panel Controls: Listen volume, talk, volume, power on off, LED power indicator
  1. Audio frequency Response: Selectively shaped for maximum voice intelligibility
  2. Audio Power: 2 watts per amplifier
  3. Distortion: Less than 2%
  4. Listen Mode: 20 dB compression
  5. Talk Mode: VOX
  6. Microphone: Electret
  7. Power Supply: Input 120 VAC, 60 Hz, Output 15 VDC, 175mA

Other Models Available

Model TTU-7B-X

Same as TTU-7-X model except it has a Level-3 bullet-resistant barrier installed inside the window unit

Model TTU-7NC-X

Same as TTU-7-X model except it incorporates noise-cancelling circuitry to automatically attenuate the outside ambient noise by 26db to 30db.

Model TTU-7D

Same as TTU-7-X model except it has a rechargeable battery pack so the wiring will not be seen when in use

Alpha Communications
42 Central Drive • Farmingdale • NY • 11735-1202 • Phone: (631) 777-5500 • Fax: (631) 777-5599
TOLL-FREE: (800) 666-4800 • Web: • Email:
Copyright© 1998-2020 Alpha Communications® - All Rights Reserved.
Talk-Thru™ is a registered trademark of Norcon Communications Inc.
Due to continuous product improvement, all colors, sizes, materials, finishes and specifications are subject to change without notice.