The Alpha Communications®/S.T.R.™ VSP333 4-
Video Controller is used with the QwikBUS™ series
intercom and/or video-intercom systems. The VSP333
is required for the 4-wire QwikBUS™ systems and
is an option on the 2-wire QwikBUS™ systems,
depending upon system configuration(s).
On 2-wire QwikBUS™ systems, the VSP333 gets
its power from the SP333 control unit and on 4-wire
QwikBUS™ systems, the VSP333 gets its power
from the required SNT333 power supply.
The VSP333 provides the circuitry needed for up to
four 4 bus video risers and up to four (4) bus video
• Easily Installs Right on Finished Wall Surface or in
Optional Junction Box
• Operates on Safe Low-Voltage Class II Wiring
• Positive Screw Terminal Connectors
Height: 3.75" (96mm)
Width: 4.25" (108mm)
2.375" (61mm) from mounting
Construction: High impact Grey ABS plastic case
Positive screw terminal and plug-in
0-50 degrees C.
Surface-mounted (usually installed near
the system central equipment).
Rev. 1 - 05/07
ARCHITECTS' AND ENGINEERS'
The 4-Video Controller unit(s) shall be Alpha Com-
munications®/S.T.R.™ QwikBUS™ model
VSP333, or approved equal. The VSP333 shall be
built into a rugged high impact Grey ABS plastic
case, and shall be powered by the SP333 control unit
or SNT333 power supply, depending upon system
Low voltage wiring shall be used and positive screw
terminal connectors shall be provided for installation
wiring. The VSP333 shall be mountable right to the
surface of the wall or in a customer-supplied junc-
tion box cabinet.
Contractor shall observe all local and national elec-
trical and building codes.
Copyright© 2007, Alpha Communications®, All Rights Reserved
42 Central Drive • Farmingdale NY 11735-1202 • Phone (631) 777-5500 • Fax (631) 777-5599
TOLL-FREE 1-800-666-4800 • Web: www.AlphaCommunications.com • E