The Alpha Communications® / S.T.R.™ TT33-3 QwikBUS™ Panel Speaker/Microphone units are used with the systems to provide intercom functions at remote door entry locations, and depending on system configuration, optional electric opener(s) etc.
The powers from associated model# SP333 Intelligent Controller unit(s), does not require any additional power supply unit(s). When conventional pushbutton type stations where release is required, will also a T1240 U.L. Listed 12VAC plug-in transformer.
The speaker/microphones designed easily mount right behind faceplate in various models of our lobby style panels.
The feature built-in relay, voice volume control potentiometer connector for connection E32 32 station 2-wire extender(s).
The PC boards treated special chemical finish, minimize affects weather moisture electronic components.
- Easily Installs Panel
- Operates Safe Low-Voltage Class II Wiring
- Clear Fidelity Adjustable Controls
- Convenient Screw Terminal Connections
- High quality Half-Duplex Communications
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