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