Product Specification Sheet APS638

Rev. 11/2015

SP333 Intelligent Controller (QwikBUS™ Series)

Architects' And Engineers' Specifications

The intelligent controller(s) shall be Alpha Communications® / S.T.R.™ QwikBUS™ model SP333, or approved equal. The SP333 shall be built into a rugged high impact ABS plastic case, and shall be powered by the model SNT333 power supply, with C333-2 connecting cable. Contractor shall furnish the proper number of SP333 units, depending upon system capacity.

Low voltage wiring shall be used and positive screw terminal and plug-in connectors shall be provided for installation wiring. The SP333 shall be mountable right to the surface of the wall or in a customer supplied junction box cabinet.

The SP333 intelligent controllers are also designed to be used in conjunction with the MXAV333 audio/video mixers, or the older model MXA333 (audio) and MXV333 (video) mixers. 

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

SP333 Intelligent QwikBUS™ Controller

The Alpha Communications® / S.T.R.™ SP333 intelligent controller is used only with the QwikBUS™ series intercom and/or video-intercom systems. The SP333 provides the intelligent 'BUS' circuitry needed to control the QwikBUS™ system functions.

Each SP333 gets its power from the SNT333 power supply. All SP333 field connections are positive screw terminal type, or plug-in type.

Each QwikBUS™ system requires a minimum of one SP333 intelligent controller.

  • Easily Installs Right on Finished Wall Surface or in Optional Junction Box
  • Operates on Safe Low-Voltage Class II Wiring
  • Positive Screw Terminal and Plug-in Connectors
Height: 3.75" (96mm)
Width: 4.25" (108mm)
Depth: 2.375" (61mm) from mounting surface
Construction: High impact ABS plastic case (typically White or Grey)
Connections: Positive screw terminal and plug-in connectors
Temperature Range: 0°C - 50°C
Mounting: Surface-mounted (usually installed near the system amplifier/power supply and other system central equipment).
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Due to continuous product improvement, all colors, sizes, materials, finishes and specifications are subject to change without notice.