Product Specification Sheet APS485

Rev. 12/2019

TTU-302 Counter Top 2-Way Talk-Thru Communications System with 2nd Master Station

This Specsheet is for a product which is discontinued. Please contact us for alternative products.

The Ideal Counter-Top Communication System
Where It is Impractical to Cut a Hole In the Barrier



During off hours (or lunch time, etc.), when there is no receptionist at the front counter, employees in the back office (or security booth, etc.) can still talk to your visitors, by using the TTU-302. The TTU-302 system includes two (2) 12" prismshaped inside units (master 'A' and master 'B') and one (1) prismshaped outside unit. The inside master 'A' and outside unit are mounted on the front counter and operate the same way as the basic TTU-3. The Inside master 'B' is mounted in the remote (back office) location.

How It Works

When the customer visits the front counter (during off hours), the customer can push the 'PUSH TO CALL' button, which will sound a buzzer in master unit 'B'. The employees can turn on master 'B' and talk to the customer. Both masters ('A' & 'B') have their own high-quality electronics and individual power supply. The user can turn on master 'B' at any time. When one inside master is turned on, the other inside master will be turned off. Only one (1) inside master may remain operational at any given time.

The TTU-302 incorporates the same high-quality electronics as the basic (Norcon) patented model TTU-1 Talk-Thru system. It is a vox system, enabling the attendant and the customer to talk and listen giving easy natural conversation.

The TTU-302 provides clear communication even in environments with high ambient noise, shaping the sound for maximum intelligibility. Its compression circuitry decreases loud, annoying sounds.

How To Install

The TTU-302 comes ready to operate. Master 'A' and the outside unit are quickly and easily mounted on the counter-top on opposite sides of the barrier. They can be positioned backto-back (as shown) or randomly. The portion of the unit with the gooseneck microphone (and labeled as 'A') goes inside the booth; the unit with the 'PUSH TO CALL' button is mounted outside. The portion of the unit with the gooseneck microphone (and labeled as 'B') goes in the back office. An eight (8) conductor jacketed cable connects masters 'A' and 'B'.

The TTU-302 uses a continuous-duty, 117-Volt AC power supply which is stepped down to 12 Volts.

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



  1. Outside assembly: Machined aluminum, anodized finish, tamper-resistant
  2. Inside assemblies: Machined aluminum, anodized finish, tamper-resistant
  3. Size (all 3 assemblies): 2.375" H x 12.0" W x 2.375" D 
  4. Weight: 4.50 lbs.
  5. Mounting: Counter-top
  6. Panel Controls: Listen volume, Talk, volume, Power onoff (random position 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: 20dB compression
  5. Talk mode: VOX
  6. Microphones: Electret
  7. Power Supply: Input: 120 VAC, 60 Hz
  8. Output: 15 VDC, 200mA

Mounting Details
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.