Product Specification Sheet APS861

Rev. 11/2013

TT33-2 QwikBUS™ Panel Speaker/Microphone Unit

TT33-2 (Shown with Housing)
Architects' And Engineers' Specifications
The door entry panel speaker / microphone unit(s) shall be Alpha Communications®/S.T.R.™ model# TT33-2 QwikBUS or equivalent. Speaker/microphone unit(s) shall be powered from the associated model# SP333 QwikBUS™ Intelligent Controller unit(s). All wiring to speaker/microphone shall be low-voltage Class II wiring, installed as per all federal, state, and local electrical and building codes.

Speaker/microphone unit(s) shall be designed to mount directly behind the faceplate in various models of pushbutton style Alpha Communications® lobby entry intercom panels.

Speaker/microphone unit(s) shall feature a built-in door release relay, voice volume control potentiometer and a plug-in connector for connection to the model# E32 32 station 2-wire extender(s), as needed (maximum 3 per system).

Contractor shall observe all local and national electrical and building codes.

TT33-2 QwikBUS™ Panel Speaker/Microphone Unit

The Alpha Communications® / S.T.R.™ TT33-2 QwikBUS™ Panel Speaker/Microphone units are used with the S.T.R.™ QwikBUS™ systems to provide intercom functions at remote door entry locations, and depending on system configuration, optional electric door opener(s) etc. 

The TT33-2 powers from the associated model# SP333 QwikBUS™ Intelligent Controller unit(s), and does not require any additional power supply unit(s). When used with conventional pushbutton type door entry stations where electric door release is required, the TT33-2 will also require a model# T1240 U.L. Listed 12VAC plug-in transformer.

The TT33-2 speaker/microphones are designed to easily mount right behind the faceplate in various models of our lobby entry pushbutton style intercom panels.

The TT33-2 speaker/microphones also feature a built-in door release relay, voice volume control potentiometer and a plug-in connector for connection to the model# E32 32 station 2-wire extender(s).

The PC boards are treated with a special chemical finish, to minimize the affects of weather and moisture on the electronic components.

Features
  • Easily Installs Right Behind Lobby Entry Panel
  • Operates on Safe Low-Voltage Class II Wiring
  • Clear Voice Fidelity with Adjustable Voice Volume Control
  • Convenient Screw Terminal Connections
  • High quality Half-Duplex or Enhanced Half-Duplex Voice Communications (depending on inside stations being used)
Specifications

Dimensions:

3.375"W (86mm) x 5.625"H (143mm) x 1.25"D (32mm).

Volume: Built-In Adjustable Volume Control (potentiometer).
Connections:

Positive Screw Terminal Connectors.

Alpha Communications
42 Central Drive • Farmingdale • NY • 11735-1202 • Phone: (631) 777-5500 • Fax: (631) 777-5599
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Due to continuous product improvement, all colors, sizes, materials, finishes and specifications are subject to change without notice.